The Outer Worlds Windows 10 100% guide

This is your first story achievement and unlocks upon arriving in Emerald Vale and gaining control of your character.

Continue toward Edgewater.

Accept Parvati when Reed offers her assistance.

The achievement unlocks when your first companion is recruited.

Keep Parvati and every later companion. Six companions are needed for One for All, and their quest lines are needed for All for One.

Collect Spacer's Choice equipment rather than immediately selling all of it.

You need to simultaneously equip:

• Spacer's Choice clothing.
• Spacer's Choice headgear.
• Four weapons manufactured by Spacer's Choice.

The brand is what matters. Generic spacer clothing does not count.

Once all six equipment slots satisfy the requirement at the same time, the achievement unlocks. Edgewater provides ample Spacer's Choice equipment, so finish this before selling surplus branded gear.

Edgewater's shops can provide all five consumable categories.

Consume one item from each category before backing out of the inventory:

• Meat.
• Carbohydrates.
• Sugary drink.
• Caffeine.
• Alcohol.

The achievement unlocks when all five bonuses are active simultaneously.

Keep a tossball stick or tossball blocker and use it as a finisher against easy enemies throughout the run.

You need 50 killing blows with either weapon type.

Do not leave all 50 kills for the end. Sprats and other weak wildlife are ideal targets, and dropping the difficulty after Emerald Vale makes this substantially faster.

Crouch before engaging unaware enemies and use high-damage opening attacks.

You need 50 kills counted as sneak attacks. Sneak attacks require at least 20 points in Sneak.

Weak enemies can be killed outright. Against stronger targets, weaken them without alerting them when practical and finish with the sneak attack.

During Tactical Time Dilation, target the groin on human enemies whenever convenient.

You need 30 successful groin hits, not 30 kills. A target can survive the hit. Only humanoid enemies have a groin; robots do not.

Tactical Time Dilation hits only apply location effects once you have base Ranged 20 or base Melee 40. Melee and ranged groin hits both count.

Working on this throughout marauder-heavy areas is considerably faster than farming it later.

Use plasma as one of your primary damage types during normal exploration.

You need 100 enemies turned to ash through plasma damage. Plasma killing blows are the efficient way to progress it.

There are far more than 100 suitable enemies across the base game and DLCs, so start early and keep a plasma weapon equipped.

Use workbenches instead of hoarding every mod and bit.

The achievement counts 30 gear improvements through tinkering and modification. Cheap early equipment is ideal for inexpensive tinkering, while unwanted mods can be installed on equipment you intend to keep or sell later.

The achievement unlocks on the 30th qualifying improvement.

Use the medical inhaler frequently rather than waiting until critically injured.

The requirement is 300 inhaler uses. Adreno is extremely common once you begin looting thoroughly.

Do not depend on save-reload farming for this guide. Some players report this counter not keeping progress around reloads, or sticking short of 300, with no known fix. Progressing the counter on your live completion save, and saving after progress, is the lowest-risk route.

By the end of both DLCs you should have an enormous Adreno supply. If the achievement remains, repeatedly use the inhaler until the 300th use registers.

You need to accept three flaws.

Because flaws permanently penalize that save, defer deliberate flaw farming until after the Supernova branch has been preserved and the main completion branch is on a lower difficulty.

Repeated exposure to qualifying hazards, enemy types, falls, elemental damage, or other repeated failures can cause the game to offer a flaw. Accept any three manageable flaws.

Make a manual save before accepting a flaw if you want to inspect its penalty first.

The achievement unlocks when the third flaw is accepted.

Use Persuade, Lie, and Intimidate options whenever they appear.

The requirement is to use dialogue-skill options 30 times in conversations. Disguise conversation checks also count.

A speech-focused completion route contains far more than 30 opportunities, so this should unlock naturally well before the end if you consistently select qualifying dialogue options. Progress it on your live continuing save; reloading an earlier save has been reported to lose progress.

Raise base Inspiration to at least 20 to unlock companion special abilities.

You need 50 enemies killed by those abilities. The ability must deliver the killing blow.

The efficient method is to weaken enemies yourself and then trigger a companion ability as the finisher. Sprats and other weak enemies can often be killed outright by the ability.

Use companion specials aggressively after lowering the difficulty. Waiting until cleanup makes the cooldowns unnecessarily tedious.

Kill any mega creature.

Mega versions of primals, raptidons, mantisaurs, canids, and other creatures appear throughout later areas. There is no need to force this during the Supernova portion.

On your lower-difficulty completion branch, kill the first mega creature you encounter rather than avoiding it.

The achievement unlocks on the kill.

Sell unwanted weapons, armor, consumables, and junk instead of dismantling everything.

You need to sell a cumulative 10,000 bits worth of goods to vendors.

There is no requirement to hold 10,000 bits at once. Normal looting through the base game and DLCs supplies considerably more than enough merchandise.

Install the power regulator and complete the sequence that gives you full use of the Unreliable.

The achievement unlocks when you obtain your own functioning ship and can begin traveling between destinations.

A Mardet identity cartridge can be obtained in the Medical Bay area, allowing the Holographic Shroud to disguise you inside a Groundbreaker restricted zone.

Enter the restricted area while disguised.

The disguise meter has three segments, giving you three chances. Keep walking or running around inside the restricted area while disguised. Each time a segment empties, a guard challenges you and you must pass a Persuade, Lie, or Intimidate conversation check.

The first check is low, roughly 15, and later checks rise. Around 40 in Lie, Persuade, or Intimidate is safe. Ellie in the party adds a Lie bonus.

Do not leave the restricted area between the checks.

The achievement unlocks on the third consecutive successful conversation check made under that single disguise.

The Prismatic Hammer is an early science weapon in the Groundbreaker Repair Hangar, tied to the quest Weapons From the Void. Gladys's Battered Mardet Datapad points you to it. Enter the hangar through a loose panel, or open the door with the Repair Hangar Keycard carried by the Outlaw Squad Leader.

The requirement is to kill an enemy with a science weapon sneak attack during Tactical Time Dilation, with a weak-spot critical hit. All of the following must describe the killing blow:

• A science weapon is used.
• The target is unaware so the hit qualifies as a sneak attack.
• Tactical Time Dilation is active.
• The attack is a critical hit.
• The attack hits a weak spot.
• The attack kills the enemy.

A weak sprat is an excellent target.

You need at least 20 Sneak for the hit to count as a sneak attack.

Crouch before approaching, enter Tactical Time Dilation, aim at the weak spot, and make sure the science-weapon hit is the killing blow. The Prismatic Hammer is the usual method: crouch, enter Tactical Time Dilation, and kill the target in one swing to the head. Some players report repeated hammer kills not registering. If that happens, switch to a ranged science weapon such as the Mind Control Ray aimed at the head, which has worked as a fallback. If the achievement does not pop on a qualifying kill, reload and retry.

Make a manual save before deciding what to do with Anton Crane's research.

Return the research to Anton.

The achievement unlocks when The Doom That Came to Roseway is completed by giving the research back to him.

If you prefer another outcome for your continuing save, reload the manual save after the achievement unlocks and make that choice instead.

Roseway, later corporate facilities, and the DLCs contain many automechanicals.

Keep a shock weapon available and use it to deliver killing blows against robots, drones, and other automechanicals.

You need 30 automechanical kills with shock damage.

Do not waste these enemies with another damage type while the achievement is unfinished. It should unlock naturally during the main route if you consistently switch to shock against machines.

This story achievement unlocks when you first land in Byzantium.

Rachel Lockwood is hiding in the Byzantium maintenance tunnels beneath Prosperity Plaza. Buy her whereabouts from Mr. Billingsly, or follow the lead through Sherman Bradshaw at the Bureau of Exploration; Bradshaw turns out to be an assassin hired to kill her.

Spare Lockwood. Felix's Friendship's Due has not started yet at this point, which is expected; it begins after you meet Hiram Blythe on Monarch. Killing Lockwood upsets Felix and can stall that later quest, while sparing her keeps it safe.

Either way she hands over the key to her office at the Bureau. Take the papers from her desk and return them to Sophia to finish the quest.

The achievement unlocks when the cartographer has been dealt with.

The achievement unlocks when you reach Stellar Bay as part of the main story route.

Recruit all six companions:

• Parvati.
• Vicar Max.
• SAM.
• Felix.
• Ellie.
• Nyoka.

Nyoka should be the sixth on this route.

The achievement unlocks the moment the sixth companion officially joins the Unreliable.

Once you obtain an N-ray weapon or an appropriate N-ray weapon modification, begin using it against clustered organic enemies.

You need 20 kills of enemies that carry the N-ray infected status when they die. The killing blow can come from N-ray damage or from any other attack, as long as the status is active. Infection spreading to nearby enemies is a bonus, not a requirement; directly infected targets count.

Apply N-ray damage to an organic target, for example by shooting a leg with an N-ray weapon or mod, and kill it while the debuff is active. Groups of marauders or creatures let the infection spread for extra progress.

Automechanicals cannot be infected, so do not use robots for this achievement.

Prepare weapons that cover all five damage types:

• Physical.
• Shock.
• Plasma.
• Corrosive.
• N-ray.

Choose a high-health enemy such as a mega creature.

Set companions to defensive if necessary so they do not kill it early. Hit the target at least once with each of the five damage types, then kill it.

The five damage types do not need to be active as simultaneous status effects. The same enemy simply needs to have been hit by all five before it dies.

The achievement unlocks on that enemy's death.

Raise any single skill to 100.

The skill's BASE value must reach 100. Gear, companion, and consumable bonuses do not count. The achievement checks the skill reaching 100, even though the DLCs raise the overall skill cap beyond that point, and it pops when you leave the skills screen.

A focused dialogue, stealth, combat, or science build will reach 100 naturally. You can also use the Unreliable's respec machine late in the run if your points have been spread too broadly.

The achievement unlocks when you complete the main-story objective that stops Monarch's broadcasts.

Continue until the crashed ship appears and Canid's Cradle begins.

When Monarch is done, report Signal Point in Space to Sophia (the Edgewater Outcome Branch in the Byzantium Return section) before turning Radio Free Monarch in to Phineas.

From the targeting-module save, give the module to either Sanjar (MSI) or Graham (Iconoclasts).

Fight the opposing faction and kill its leader.

The achievement unlocks when the battle of Stellar Bay is won for your chosen side, normally as the opposing leader dies. If it has not unlocked after the leader dies, report to your surviving leader.

Reload the targeting-module save after it unlocks.

On the continuing branch, do not give the targeting module to either faction.

Provided you met the earlier Iconoclast and MSI requirements, including completing Sucker Bait and deleting the ARMS data, talk to Zora. She overthrows Graham, and Graham is killed in the process. Support her.

Persuade Zora to negotiate with Sanjar. This needs Persuade 55, or the Intelligence or Perception dialogue alternatives.

Talk to Sanjar and use Zora's executive review to convince him that she is suitable for negotiation.

Go to the OSI church outside Stellar Bay's southern gate and conduct the meeting. Choose dialogue that supports cooperation rather than reigniting the dispute.

The achievement unlocks when the negotiation successfully concludes.

Keep this peaceful branch as your main save.

You need at least 75% positive reputation with three factions simultaneously.

Positive and negative reputation are separate bars. This achievement checks only the positive bar, which must reach the top band (75% or higher) for each of three factions. Confirm on the Reputation screen that each bar is in that top band.

Counting factions are Groundbreaker, Iconoclasts, Monarch Stellar Industries, SubLight Salvage & Shipping, The Board, Auntie Cleo, C&P Boarst Factory, Deserters, and Spacer's Choice. SubLight is an easy faction to max.

The completion-friendly route naturally produces large positive gains with multiple factions through side quests and peaceful resolutions.

Check the Reputation screen as you progress. Completing faction quests before turning hostile against anyone is the safest method.

The achievement unlocks as soon as a third faction reaches at least 75% positive reputation while two others are already at or above that threshold.

Finish any one full post-recruitment companion quest line.

SAM's recruitment quest alone does not satisfy this achievement.

Ellie's The Low Crusade is one of the shortest practical completions once Byzantium is available, but any of the five full character quest lines works.

The achievement unlocks when the first qualifying companion's entire quest line is completed.

Find Maverick Johnston in Byzantium and accept the Odeon Pictures quest.

Complete the movie sequence.

Your acting choices do not determine the achievement. Even a disastrous performance can finish the quest.

The achievement unlocks when the movie job is completed.

Before or during Byzantium, collect A Nice Hat from the well-dressed skeleton in the ruined church area south of Stellar Bay, inside the plus-shaped building southwest of the Stellar Bay Ruins fast-travel point.

A Nice Hat is unique. The Oxonian looks similar but does not count. Never sell, dismantle, or lose A Nice Hat; doing so makes this achievement unobtainable.

In Byzantium, speak with Celeste Jolicoeur and complete Makes Space Suits, Won't Travel.

Her quest has three parts.

Model three outfits for her: Spacer, Iconoclast, and Marauder. For each one, wear a head piece and a body piece from that group, then talk to her. Check the item description, which names the group (for example "spacer's helmet").

• Spacer means the Spacers clothing group, not the Spacer's Choice brand. Spacer's Choice items do not count. Ike's Armory on Groundbreaker sells Spacer pieces such as Streetwear Basic with an Opti-Goggles or Vac Helm.
• Iconoclast pieces are sold by the Amber Heights vendors on Monarch, and the Iconoclast Apostle Armor and Helmet come from The Commuter and Pay for the Printer.
• Marauder pieces drop from marauders on Emerald Vale and Monarch.

Then bring her 10 Primal Leather, 3 Raptidon Flank Hide, and Mantiqueen Chitin. These materials only start dropping once this stage of her quest is active. Primals are on Emerald Vale and Scylla; raptidons and mantiqueens are on Monarch. Sebastian Adams in Stellar Bay reportedly sells the raptidon and mantiqueen materials. Do not take the Intimidate 40 option that skips this step for bits; it forfeits Chimaera.

Finally, collect her parcel from the HPS building northwest of Prosperity Plaza. The clerks send you between Window A and Window B and to 316 Rockwell in the Estate District; showing her Writ of Consent or passing Persuade 40 at Window A releases the parcel.

When you return, Celeste has been executed by the city guard. Loot Celeste's Key from her body, unlock her office, and take Chimaera from the desk. Attacking the guards is optional and costs Board reputation.

Equip A Nice Hat and Chimaera at the same time.

The achievement unlocks immediately when both are worn together.

Learn the shocking truth about the colony from Chairman Rockwell's video message.

• Phineas route: during The City and the Stars, watch Rockwell's video at the terminal in the HHC building office in Byzantium.
• Board route: Sophia Akande shows you the video herself.

The achievement unlocks when the revealing message is viewed. It is story progression on either route.

Complete all of Lilya Hagen's SubLight quests, started from Lilya on Groundbreaker:

• Space-Crime Continuum.
• The Ice Palace.
• The Chimerist's Last Experiment.

The chain concludes after dealing with Dr. Eva Chartrand and returning to Lilya.

The achievement is awarded for completing the SubLight quest lines. Any resolution of Chartrand that completes the quest should work.

From the Edgewater branch save, leave Reed alive and speak to Sophia.

Because Edgewater was preserved, its deserters returned, and Reed remains in charge, the Board considers the town productive.

Complete the conversation that recognizes Edgewater's survival.

The achievement unlocks when Edgewater is permanently spared under this outcome.

Reload the branch save.

From the same pre-Sophia save, travel back to Edgewater before speaking to her and kill Reed Tobson.

Return to Sophia.

With Edgewater now leaderless, she can initiate Foundation.

Accept Foundation and travel to the Emerald Vale Geothermal Power Plant. Use the terminal to activate the termination protocol.

Return to Edgewater and destroy the automechanicals sent into town.

The achievement unlocks when the final required automechanical is destroyed.

Do not keep this destructive branch. Reload your pre-Sophia save and continue with the Mightier than the Sword outcome.

This is best handled on the disposable Ludwig was Right branch.

You need at least 75% negative reputation with three factions simultaneously.

Positive and negative reputation are independent bars. A faction can sit at 75%+ positive and 75%+ negative at the same time, so this achievement does not undo Everybody Likes Me progress. The disposable branch is recommended only to keep your main save clean, not because it is required. Any three of the counting factions listed under Everybody Likes Me work.

Destroying Edgewater provides an easy route toward extreme negative Spacer's Choice reputation.

From the same throwaway branch, attack enough members of two other major factions to push each to at least 75% negative. MSI and the Iconoclasts are convenient because both have concentrated settlements on Monarch.

The achievement unlocks as soon as the third faction reaches at least 75% negative reputation.

Immediately reload your clean main save afterward. Do not carry the massacred-faction state into the rest of the completion.

Complete all required companion quests on the same continuing save:

• Drinking Sapphire Wine.
• Don't Bite the Sun.
• The Illustrated Manual.
• The Empty Man.
• Friendship's Due.
• Worst Contact.
• The Low Crusade.
• The Cleaning Machine.
• Passion Pills.
• Star-Crossed Troopers.

The achievement unlocks once the final required companion quest is completed.

Do this before the Hope and Tartarus endgame.

Open the delivered package aboard the Unreliable.

Lucky Montoya's message plays.

The achievement unlocks when you listen to that message.

Afterward, physically pick up the portable phonograph that appears with the package. Hearing the message is not enough for this device to count toward Good Listener.

From the main Gorgon area, work southeast toward the Marauder Camp and Worker Domiciles.

Charles from Accounting is in this region.

After clearing or bypassing the camp, continue into the nearby passage and locate Lucky Montoya's body.

The achievement unlocks when you discover Lucky's corpse.

Pick up the portable phonograph beside him before leaving.

You need 20 qualifying Portable Phonographs.

The first is the physical phonograph created after Lucky's introductory package message, so make sure you picked it up rather than merely listening to the automatic message.

From there, thoroughly collect portable phonographs through Ambrose Manor, the Gorgon ruins, OCI, HIA, CHEM, employee areas, research sites, and other story locations.

Gorgon has about 23 qualifying audio logs, more than the 20 required, and Eridanos audio logs also count if you somehow leave Gorgon short.

Do not turn in the Electric Fling audio logs to Roscoe Clanton, and do not surrender them to NTVUR, until Good Listener has unlocked. Handing them over can reduce your tracked progress.

The achievement unlocks when your 20th qualifying phonograph is collected.

Do not postpone obvious phonographs. Several are inside locations you may have little reason to revisit.

Gorgon audio log checklist, in rough route order. Compare it with the Gorgon Audio Logs list in your Codex to find what you are missing. EF marks the logs tied to Roscoe Clanton's Electric Fling quest; hold onto those until the achievement unlocks.

• Lucky Montoya's Last Message: the package aboard the Unreliable. Pick up the phonograph from the table after the message plays.
• Olivia's Goodbye: Ambrose Manor, Olivia's master bedroom upstairs. The Master Bedroom Keycard is in the office off the kitchen; the Kitchen Keycard is in the storage building by the landing pad, or hack the kitchen door.
• Lucky's Notes: Smoke and Mirrors: beside Lucky Montoya's body in the Marauder Stronghold.
• For Benji: Abandoned Mines, in a short tunnel to the right of the northbound tracks.
• Lucky's Notes: Narrow Escape: near the Abandoned Mines marker, in an enclave by the rock wall beside a poison barrel. A mega creature roams nearby.
• I Feel Like Me Again: Economy Flats, top floor, farthest apartment, on the counter by the bed. The door needs roughly 55-65 Lockpick.
• Lucky's Notes: More to the Story: OCI lower exterior, on a crate just outside the entrance.
• An Interview with Dr. Ambrose, Part 1 (EF): OCI third floor, on a shelf. Climb the ladder from the maintenance room and turn right.
• An Interview with Dr. Ambrose, Part 2 (EF): Executive Suites in the east of Gorgon Canyon, first apartment up the ramp, beside the bed.
• Dr. Ambrose's Diary: Memory: Maurice's Research Site, inside the structure reached by the mined path behind the Executive Suites. Shoot the mines.
• Dr. Ambrose's Diary: Metamorphosis: the same structure at Maurice's Research Site.
• An Interview with Dr. Ambrose, Part 3 (EF): HIA third floor, hidden behind a large vertical pipe near a door.
• Incident Report: HIA: in HIA past the observation room. Take the stairs down on the far side, open the barred door, turn left, and it is on the top step of the next stairs.
• Unofficial Recording: HIA: on the floor in front of the desk in the HIA supervisor's office.
• CHEM Lab Passphrase: given by Dr. Jasper Low after you restore the turbine in The Man in High Orbit.
• Lucky's Notes: Onto Something: CHEM Lab upper exterior. Follow the facility to its far end; it is on a crate before a gated cylinder.
• To Roscoe (EF): a CHEM Lab storage room, on a shelf.
• Ambrose Lab Notes #1: CHEM Lab third floor, on the floor of the lower of the two upper-right rooms.
• Ambrose Lab Notes #2: CHEM Lab third floor, behind the bay door in the lower-left sector, on a cart near the Material Processing Terminal.
• Ambrose Lab Notes #3: CHEM Lab second floor, on shelves in the room left of the exit stairs.
• Follow-up Interview with Dr. Ambrose (EF): the Trash Dump hut, reached by the CHEM Lab lower exterior elevator. Check the locker right of the doorway.
• Observational Notes, Undated: Groundbreaker Auxiliary Maintenance Bay, second floor, on a table in the large plant room. The Gorgon side quest A Clockwork Mock Apple takes you there.
• Observation Log: Percy: the same floor of the Auxiliary Maintenance Bay, on a small table in the side passage beside Percy's glass box.

If you are still short after Gorgon, Murder on Eridanos audio logs also count. Reported Eridanos logs are Black Hole Bertie's Message (Grand Colonial penthouse bedroom), Constabulary Audio Log (Constabulary desk at Piraeus Spaceport), Danvers' Nightly Report and SLUG Crew C Work Log (the area between the Grand Colonial and the orchards), Silvio's Speed Record (by Silvio Trans' body before the Wilderness Exploitation elevator), Dr. Blossom's Slug Log (Dr. Blossom's room in RR&DD Labs), and a Malfunctioning Audio Log in the Grand Colonial.

Three Gorgon science weapons must each be acquired. They do not need to remain in your inventory simultaneously.

Special Delivery is carried by Charles from Accounting in the Marauder Camp southeast of the main landing area. Kill or pickpocket him and immediately take Special Delivery. His body is not a safe place to leave the weapon for later.

Employee Benefits belongs to Dr. Jasper Low during The Man in High Orbit. Restore the turbine as he asks and return to him without killing him; he gives Employee Benefits as your reward. It can also be pickpocketed or looted from him. Whether it can still be obtained after you leave is unconfirmed, so before leaving the station, verify Employee Benefits entered your inventory and pickpocket him if it did not.

The P.E.T. is inside the Secret Hideout and is tied to A Dialog Between Dead Men. Collect the four Archibald Excelsior comics at their marked research sites, then use the terminal at the hideout.

The four answers, in order, are:

1. Sissak Sassafrass, Spindle Knight of Olympus!
2. The skull of King Alpha's own mother!
3. Tricking Archibald with his dastardly Mind Control Ray!
4. With a bolt of lightning from above!

Enter the hideout and physically pick up The P.E.T.

The achievement unlocks when all three science weapons have been acquired at least once.

Enter the Synthesis and Manufactory Center as directed by Red Tape of Command.

Reach Olivia Ambrose's office and pick up her journal.

The achievement unlocks when Olivia's journal is acquired.

Do not continue into an ending branch without keeping the earlier save.

The requirement is to power the SMC reactor. It does not require killing Minnie or siding with Lucien. It unlocks on either of two routes:

• Minnie's ending: in the SMC, kill Olivia, or use the dialogue option to throw her into the reactor, then power the reactor.
• The Lucien branch: it also powers the reactor, so this achievement unlocks automatically on the way to The Postman.

On this guide's route, it is earned on the Lucien branch:

1. From the Red Tape save, kill Minnie Ambrose at Ambrose Manor at any time before you pick up Olivia's journal. This causes Lucien to appear through ADA aboard the Unreliable.
2. Accept Lucien's revised instructions.
3. Retrieve Olivia's journal, which unlocks Synthesize This.
4. Side with Lucien in The Ambrose Intersection, deal with Olivia, and power the reactor.

The achievement unlocks when the reactor is successfully powered.

Continue this same disposable branch for The Postman.

This requires that Minnie was killed before Olivia's journal was picked up. That condition is what makes this branch incompatible with Family Reunion.

After siding with Lucien and powering the reactor, agree to deliver Olivia's journal for him.

Travel to Byzantium; either landing pad works. Follow the quest marker to the dead-drop mailbox and deposit the journal. Turn around and talk to Lucien's contact, Simon Rentoe.

The achievement unlocks when that conversation ends.

The first time you carry one of the DLC's valid ending routes through its conclusion, this achievement unlocks for completing Peril on Gorgon.

If it unlocks alongside The Postman on the disposable branch, that is fine. Achievement credit remains after you reload.

Reload the permanent Red Tape of Command save.

From the reloaded Red Tape save, play Red Tape of Command normally with Minnie alive and pick up Olivia's journal. Continue until The Ambrose Intersection gives you the final choice.

Go to the lab beneath Ambrose Manor and talk to Minnie. Pass her escalating Persuade checks (65, 100, then 150) until you receive the "Find a compromise" objective.

Make another manual save here, before using the terminal.

Use the terminal behind Minnie and choose "Execute NDA Protocol", which destroys the Synthesizer. Your conversation choices with Minnie do not decide this ending; using the terminal does.

The achievement unlocks when the Synthesizer is destroyed.

Reload the save from immediately before using the terminal for the reconciliation ending.

From the pre-terminal save, with Minnie's Persuade chain already passed, pursue the compromise between Minnie and Olivia.

The very high Persuade requirement applies only to Minnie's chain, which tops out at a Persuade 150 check. Reach 150 through base skill, companion bonuses (for example Felix and Parvati), armor, caffeine drinks, and Gorgon's Improved Silver Tongue kit. The other three endings do not need high Persuade.

Travel to Olivia in the SMC. Her check is only Persuade 45: choose "You don't. You just have to trust me", then accept her tea invitation.

Return to Ambrose Manor and finish the conversation with both women. Your choices in this final conversation do not matter.

The achievement unlocks when the compromise between Olivia and Minnie is finalized.

Keep this reconciled outcome as the continuing main save.

Watch the aetherwave drama through ADA and accept the resulting investigation.

The achievement unlocks when you receive the invitation to Eridanos.

Travel there and begin The Last Role of Halcyon Helen.

Early in the investigation, Dr. Goodnight gives you the Discrepancy Amplifier.

Equip it as a weapon.

At Helen's crime scene, aim the Amplifier at the highlighted footprints next to the body and analyze them.

The achievement unlocks the first time you successfully use the Discrepancy Amplifier.

Keep the Amplifier equipped while investigating because numerous quest clues require it.

During Prince of Tossball, bring at least one companion before interrogating Bertie at Piraeus Spaceport.

Make a manual save before talking to him.

Continue the questioning until Bertie becomes reluctant to answer and you receive a dialogue option to assign one of your companions the Bad Inspector role.

Choose a companion.

If the companion hesitates or wants to stop, encourage them to continue. Do not interrupt the routine.

Ellie is the easiest choice because she readily embraces the role. SAM is reported to be unreliable for this, so do not use SAM.

Prince of Tossball is optional and can lapse as the story advances, so do this interrogation before moving the main investigation forward.

The achievement unlocks when the companion successfully finishes the Bad Inspector questioning.

If the conversation ends without the achievement, reload the pre-interrogation save and choose dialogue that keeps the companion in character until the sequence is finished. If the conversation finished correctly but nothing unlocked, restarting the game may help.

Finish Prince of Tossball, The Man Who Chafed, The Productivity Queen, and Lord of Blight.

After each investigation, report its findings to Administrator Ludovico.

Do not select the option saying you know who killed Helen while any suspect investigation remains.

The achievement unlocks after you finish reporting your fourth suspect investigation.

Only after it has unlocked should you advance into An Unfinished Accusation.

Acquire the three Murder on Eridanos science weapons. They only need to have been picked up at least once and do not need to remain equipped together.

Udder Buddy comes from Mildred Lenox's Lost Little Milkmech quest at LEGAL Hunting Supplies. Find Betty, resolve the quest, and obtain the weapon.

Spectrum Gatling is inside Rizzo's RR&DD Labs in the southwest of the map. Its task is At the End of the Spectrum, part of the main quest A Momentary Taste of Purpleberry. Gather the eight required Spectrum Vodka colors, then use the terminal beside the glass display case and take the weapon.

The task starts in the RR&DD Labs head research lab, after you help Dr. Blossom with the infected workers. At the central terminal, choose View Lab Notes, or the task is not added to your journal. The task does not mark individual bottles, and selling a bottle before you need it means finding or buying another.

Bottle sources:

• Rizzo's Distillation Station: reportedly all eight colors sit around the bar through the southern door off the room with the giant Rizzo's mascot head. Check here first.
• Green: Nursery Storage, in a container to the right just inside.
• Orange: a container in the Conservatory.
• Blue: the Purpleberry Puzzlehedge maze. Go left from the entrance; it is on a table deeper in on the right.
• Yellow: just inside the main building of the Hive (the Waspquito enclosure).
• Black and Red: side by side at the ruined picnic area west of RR&DD.
• Indigo: the Groundskeeper's Shack west of RR&DD, behind boxes on the back shelving. Easy to miss.
• Violet: Dr. Blossom's locked office in RR&DD, on a table. Take the office keycard from the lab or pick the lock. This is the most commonly missed color.
• Buying: the Colonial Lounge sells Red, Indigo, Blue, Violet, and Black; the Copper Bottom Cantina at Piraeus Spaceport sells Orange, Red, Green, and Yellow; the Nut Hut sells Orange and Red.

The required Spectrum colors are:

• Black.
• Violet.
• Indigo.
• Blue.
• Green.
• Yellow.
• Orange.
• Red.

The Needler becomes available late in the main Eridanos story and is the weapon most likely to be missed.

If you side with Helen, persuade her to give you The Needler in the Grand Colonial penthouse ("I'm already doing all the work"). Bring Persuade 45 to be safe; the check is around 40-45. Pickpocketing or killing her also works. If you side with Ludovico, fight Helen and loot The Needler from her.

Helen cannot be found after the DLC ends. Do not finish the DLC until The Needler has entered your inventory.

The achievement unlocks upon acquiring the third of these three science weapons.

Kill any combination of 50 Infected Humans or Parasites on Eridanos.

These enemies become common as the investigation progresses. Infected humans stumble; parasites are human-sized, slug-like creatures.

Kill infected enemies rather than bypassing every encounter.

The achievement unlocks on the 50th qualifying kill.

Returning to Eridanos after the DLC's ending is not documented, so finish the 50 kills before the final conversation with ADA that ends the DLC. If you are short, the garden region is a reliable place to farm parasites.

Continue into The Naked Hunch and follow the quest markers.

The achievement unlocks when you discover that Halcyon Helen is alive, the aetherwave industry's biggest secret. It is story progression and cannot be missed.

The story then forces you to choose between Helen and Ludovico.

Choose either Helen or Ludovico during The Naked Hunch and complete the resulting main quest that determines whether Eridanos is cured or infected.

Either outcome satisfies the achievement.

If you side with Helen, make sure you acquire The Needler from her before moving beyond the opportunity.

The achievement unlocks when the chosen cure-or-infect resolution is completed.

Both major Eridanos ending paths lead to the Slug Queen.

Fight the queen and kill her.

The achievement unlocks immediately when the Slug Queen dies.

Finish the remaining main quest after the Slug Queen encounter and carry the Eridanos story through its conclusion (Captain, Go Home).

Before the final conversation with ADA, verify that Spectrum Needler Buddy, Put Out of Their Happiness, Mutt And Jeff, and Interrogo Totus are already unlocked. Returning to Eridanos afterward is not documented, and Helen cannot be found once the DLC ends.

Speak to ADA aboard the Unreliable to conclude the story. The achievement unlocks then, for completing Murder on Eridanos on any difficulty.

Reach character level 30.

With both DLCs completed and normal side content included, this should occur naturally long before the point of no return.

If you are still below 30, complete remaining side quests, unexplored locations, and combat encounters before proceeding to the Hope.

The achievement unlocks immediately upon reaching level 30.

By now you possess numerous science weapons from the base game and DLCs.

Choose a durable enemy, such as a mega creature. Four different science-weapon effects must all be active on it at the same moment it dies. The effects are brief, so companions help.

Equip a science weapon on each companion. In each companion's combat settings, set them to Aggressive and set their weapon preference to match the science weapon you gave them (melee for the Prismatic Hammer, ranged for guns), so they actually use it. Keep two more science weapons on yourself. The Gloop Gun, Mind Control Ray, Shrink Ray, Prismatic Hammer, Special Delivery, Spectrum Gatling, and The Needler can all contribute. Employee Benefits does not, because it heals rather than debuffs. A Medical skill of 60 makes status effects last longer, which widens the window.

Let your companions land their science-weapon hits, then apply your two effects and kill the enemy while all four are still active. If Aggressive companions keep killing the target before all four effects land, switch them to Defensive and use manual attack commands to direct their hits.

The achievement unlocks when the enemy dies while affected by four different science weapons.

The special dialogue required here only appears while Intelligence is Below Average or Minimum.

You do not need to have created a low-Intelligence character.

Before using the Hope's control terminal, temporarily reduce Intelligence enough to expose the Dumb dialogue:

• Adrena-Time withdrawal: take a puff, wait about 15 seconds for the crash, and repeat. Each crash lowers Intelligence by about one step, stacking up to three.
• Spectrum Brown from Murder on Eridanos: reportedly lowers Mind attributes by 2 for 2 minutes. One Spectrum Brown plus two Adrena-Time crashes is reported to take Very High Intelligence down to Below Average.
• The Concussion flaw, from exploding barrels or mines, lowers Intelligence permanently. Only accept it if you are comfortable carrying it on that save.

Check your character details and confirm Intelligence is Below Average or Minimum.

At the terminal:

• Open Comms and patch ADA through.
• Say you are ready to skip the Hope.
• Choose to skip the Hope to Terra 2.
• Choose "I'm skipping it myself".
• Select the [DUMB] option "Stand back, ADA. I know numbers real good."

The Hope is sent into the sun and the game ends.

The achievement unlocks after this failed skip.

Reload the manual save made before using the terminal.

This time perform a legitimate Hope skip.

Allow ADA to handle the calculations rather than selecting the fatal Dumb option. ADA's skip always succeeds.

Choose Terra 2 as the destination and successfully skip the Hope.

The achievement unlocks when the Hope is safely relocated.

Continue on the real main save.

Travel to Tartarus and land.

The achievement unlocks upon reaching the prison world. It is earned on either story path.

Continue through Tartarus and resolve the final confrontation.

Finish the final Tartarus sequence, resolve the confrontation with Sophia Akande, free Phineas, and complete the game's ending.

The achievement unlocks when the post-game ending sequence begins.

At this point your lower-difficulty branch should have every achievement except Hard and Supernova.

Do not start a new full playthrough.

Return to the permanent Supernova save created immediately after Emerald Vale.

Completing the game on Supernova also satisfies the Hard completion requirement.

The achievement unlocks at the end of the preserved Supernova branch.

There is no need for a separate Hard playthrough. The Sunburn ending does not count.

Remain on Supernova from the original character creation through the final ending of this branch.

Do not lower the difficulty at any point on this preserved save. Lowering is irreversible, and the game will not let you raise it back to Supernova.

When the final story resolution is complete and the post-game report begins, the achievement unlocks. The Sunburn ending does not count.

This completes the Windows achievement stack.