Kill 1000 Infected with a mounted machine gun.
Single-handedly kill a Tank.
Heal 25 Survivors with a first aid kit.
Give pain pills to 10 Survivors.
Dole out 5000 total Survivor damage as a Special Infected.
Heal a fellow Survivor when your own health is below 10.
Survive the Death Toll campaign.
Kill a Witch with a single headshot.
Kill a Witch without any Survivor taking damage from her.
Survive the Dead Air campaign.
Blow up 20 Infected in a single explosion.
Survive the Blood Harvest campaign.
Shove a Hunter off of a pinned and helpless Survivor.
Kill an Infected with a single blow from behind.
Survive the No Mercy campaign.
Beat a campaign with all 4 Survivors.
Shove a Boomer and then kill him without him splashing on anyone.
Light a Tank with a Molotov.
Save another Survivor from a Special Infected while on the ground.
Headshot a Hunter while he's leaping.
Pounce two different Survivors in one life as a Hunter.
Light a Witch with a Molotov.
Set 101 Infected on fire.
Protect any Survivor from an attacking Infected 50 times.
Punch a Hunter as he is pouncing.
Kill 10 Smokers as they are pulling helpless Survivors.
Make 100 headshot kills.
Constrict two Survivors in one life as a Smoker.
Kill a Tank without it dealing any damage to a Survivor.
Free yourself from a Smoker who has grabbed you with his tongue.
Rescue a Survivor from a Smoker's tongue before he takes damage.
You or another Survivor take no damage after being vomited on by a Boomer.
Leave a safe room to save an incapped teammate and bring them back safely.
Drag a Survivor 100 feet with your tongue.
Cover four Survivors with Boomer bile at once.
Kill all four Survivors in one life while playing as a Tank.
As an Infected, incap a Survivor who has entered and left a safe room.
Complete "The Sacrifice".
Have Bill sacrifice himself for the team.
Kill a Special Infected with an exploding barrel.
Have all 3 generators running at once in "The Sacrifice" finale.
As a Special Infected, incap someone who is trying to sacrifice themselves.
Survive the Crash Course Campaign.
Restart the generator within 30 seconds of it shutting off in the Crash Course campaign.
Kill 5,359 Infected in the Crash Course campaign.
Win a Versus campaign of Crash Course.
Your team wipes all Survivors after the escape vehicle has opened in Crash Course.
As a Tank hit 20 Survivors with a car in the Crash Course campaign.
Pounce a Survivor for 25 points of damage in the Crash Course campaign.
Smoker pull a bile-covered Survivor until you hold him during Crash Course.
Stun a Tank with an explosion in the Crash Course campaign.
Your team incapacitates three Survivors within five seconds in the Crash Course campaign.
Revive 50 incapacitated Survivors.
No Survivors take damage after contacting the rescue vehicle.
Survive an entire campaign using only pistols.
Rescue a Survivor trapped in a closet.
Sneak past all Witches in a campaign without disturbing one.
Play an entire campaign with no Survivors taking friendly fire damage.
Finish a campaign without ever being healed.
Kill 53,595 Infected.
Survive a campaign without being incapacitated.
Survive any campaign on Expert.
Survive all campaigns on Expert.
Survive a campaign with no Survivors taking damage from Special Infected.
All Survivors complete a campaign without being vomited on.
