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