INSIDE 100% guide

Instead of surfacing and continuing right, swim down and to the left, following the yellow cable into an underwater cave. Inside, rock the large wooden pillar back and forth until it topples into a bridge, cross it, and pull the orb. Cleanup: load around checkpoint 6.

In the cornfield, hold the grab button while moving through the corn until the boy catches a hatch hidden in the ground. Pull it open and climb down into the bunker. Take the room on the left, a photo-developing room, to find the orb.

The sealed door in this bunker is the secret ending, which needs all 14 orbs. You cannot do anything with it yet. Cleanup: load around checkpoint 7.

Push the pig cart left until it hits the wall. Stand on it, pull a loose board off the barn wall, and go inside. Climb the rope and swing left onto the rafters to reach the orb. Cleanup: load around checkpoint 9.

Drop into the hole the safe made, go left, and pull the grate off the wall. The orb is behind it. Cleanup: load around checkpoint 14 or 15.

On the rooftops, slide down a slanted roof and jump across to a pipe. Do not climb up it. Climb down a short way, jump back left onto a ladder, and descend to the orb at the bottom.

A machine here plays a looping sequence of tones. That is the code for the secret ending. You don't need to note it down; the sequence is written out at the end of this guide. Cleanup: load around checkpoint 16.

Before going through the red door, take the sub to the bottom of the room and boost into the crate that covers a hole in the floor. Follow the new path to an air pocket containing two mind-control helmets. You can only reach the left one; the right one is too high.

1. Park the sub in the water just below the ledge under the left helmet.
2. Put on the left helmet to control the first dummy standing nearby, and walk him into the water so he stands on top of the sub.
3. Take off the helmet, get in the sub, and move it under the high right helmet.
4. Dip slightly below the surface, then boost upward to launch the dummy into the right helmet. He now wears it.
5. Return to the left helmet. Controlling the first dummy now lets him control a second dummy in the background.
6. Walk that second dummy to the orb and pull it.

Cleanup: load around checkpoint 30.

After the next checkpoint, ignore the door on the right that leads to the beach. Take the sub all the way left to a wall of pipes and debris below a ladder you cannot reach. Boost into the structure twice to knock it down, leave the sub, jump to the ladder, and climb to the orb. Cleanup: load around checkpoint 31 or 32.

On the way back with your newly freed followers, stop at the wooden wall you just climbed; a yellow cable runs into its boards. Have the group pull the boards off, then crawl through alone and drop into a large pit.

Grab the torch in the pit. Dogs will close in; turn to face whichever one is lunging and the torch drives it back, then keep pushing left whenever they hang back. Pull the orb at the far left. Once it breaks, the dogs leave you alone.

Cleanup: load around checkpoint 34. That checkpoint is before you get the helmet, so you will have to redo the follower and cart steps.

In the underwater lab with the long-haired creature, enter the water through the right-hand opening to lure her toward you, then jump back out once she is close. Run to the left opening, dive in, and swim hard to the left before she can catch up. Surface in a small vent room with the orb. To leave afterwards, push the grate to the left; swimming back the way you came will get you killed. Cleanup: load around checkpoint 44.

Swim down and left to a large door with red handles. Turn the handle, then pull the small tab at the top of the door to open it, and swim through to the orb. Cleanup: load around checkpoint 46 or 47.

In the room with the spotlight and the hand crank, turn the crank until the shield platform sits at the 12 o'clock position, with its lower arm pointing straight down. Go back left into the flooded room and swim down through the doorway. The orb is now within reach. Cleanup: load around checkpoint 48.

Work through the room of hanging bodies until you can bring a yellow launch box back up into the big room. Drag it to the far right wall and use it to hit the red button, which lowers a platform. Ride the box up to hit the button again, then jump onto the rising platform and climb to the orb. Cleanup: load around checkpoint 50.

This needs your group of followers. During the elevator puzzle, split them into two groups. Safest split: at least three in each, since the exact minimum isn't confirmed. One group rides inside the elevator, and the other stays outside and climbs onto its roof as it goes down. Back at the top, exit to the right; a yellow cable hangs to the right of the elevator. Have the first group boost you up to it, climb into the attic, and meet the second group, who will throw you up to the orb on the ceiling. Cleanup: load around checkpoint 54.

When you reach the ladder that leads down to the elevator, climb up instead and follow the yellow cable to a room with grass. The board of 13 lights is here. If every light is on, the giant sphere's door opens. If not, load the checkpoint for any missing orb, destroy it, and come back.

Go inside the sphere, walk all the way right, and pull left on the invisible object. Every light on the board goes dark except the second one, which points back to the cornfield bunker. Now walk back out of the sphere. The achievement unlocks as you leave, completing all 1,000 Gamerscore.

If it does not unlock, use the recovery steps from Before You Start first. Some players report that reloading the checkpoint before the sphere lets them pull the object again and walk out, but others found nothing to interact with, so treat that only as a possible retry rather than a confirmed fix.