Left 4 Dead 2

Kill a Jockey within 2 seconds of it jumping on a Survivor.

As the Spitter, spit on a Survivor being choked by a Smoker.

Kill a Spitter before she is able to spit.

Deploy an ammo upgrade and have your team use it.

As the Jockey, ride the Survivors twice in a single life.

In a Survival round, get a medal only using melee weapons.

Survive the Parish campaign.

Cross the bridge finale in less than three minutes.

Ignite 50 Common Infected with incendiary ammo.

Collect 15 gas cans in a single Scavenge round.

Kill 100 Common Infected with the chainsaw.

Honk the noses of 10 Clowns.

Use every melee weapon to kill Common Infected.

Finish a campaign using only melee weapons.

Kill one of each Uncommon Infected.

Kill 10 swampy Mudmen while they are in the water.

Kill 15 Infected with a single grenade launcher blast.

Using a Molotov, burn a Clown leading at least 10 Common Infected.

Make a Survivor drop a gas can during overtime.

Collect 100 gas cans in Scavenge.

Cause 25 gas can drops as a Special Infected.

Prove you are stronger than Moustachio.

As the Spitter, hit every Survivor with a single acid patch.

Rescue Gnome Chompski from the Carnival.

Decapitate 200 Infected with a melee weapon.

In a Versus round, leave the saferoom to defibrillate a dead teammate.

Win a game of Scavenge.

Kill a Charger with a melee weapon while they are charging.

As the Charger, grab a Survivor and carry them over 80 feet.

As the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds.

Survive the Dark Carnival campaign.

Survive the Dead Center campaign.

As the Jockey, ride a Survivor for more than 12 seconds.

Survive the Swamp Fever campaign.

Collect 10 vials of Boomer vomit from infected CEDA agents you have killed.

As the Jockey, ride a Survivor and steer them into a Spitter's acid patch.

As the Charger, bowl through the entire enemy team in a single charge.

Stop the enemy team from collecting any gas cans during a Scavenge round.

Use a bile bomb on a Tank.

Revive 10 dead Survivors with the defibrillator.

Navigate the sugar mill and reach the safe room without killing any Witches.

Prove you are faster than Moustachio.

Survive all campaigns on Expert.

Form a team and beat an enemy team in 4v4 Versus or Scavenge.

Kill a Tank with melee weapons.

Revive 10 incapacitated Survivors while under the speed-boosting effects of adrenaline.

Survive a campaign on Expert skill with Realism mode enabled.

Navigate the impound lot and reach the cemetery safe room without tripping any alarms.

Survive the Hard Rain campaign.

Defend yourself at the crashed airliner without taking damage.

Kill a Special Infected with an exploding barrel.

Open 5 foot lockers.

Have all 3 generators running at once in "The Sacrifice" finale.

Knock off the heads of 18 infected with the golf club.

Collect 10 items dropped by a Fallen Survivor.

Have Bill sacrifice himself for the team.

Play the new Midnight Riders song on a jukebox.

Kill a Tank only with damage from the original Survivors.

Play 6 Mutations.

Play 5 full games of Scavenge on The Port.

As a Special Infected, incap someone who is trying to sacrifice themselves.

Complete "The Sacrifice".

Using the M60, kill 25 infected without letting go of the trigger.

Survive The Passing Campaign.

As the Charger, grab a Survivor and crash them through 8 chairs at the wedding.