"The Sacrifice” is the new add-on for Left 4 Dead.
ZOMBIE GENOCIDEST
Not unlocked yetKill 53,595 Infected.
DEAD GIVEAWAY
Not unlocked yetHeal a fellow Survivor when your own health is below 10.
GROUND COVER
Not unlocked yetSave another Survivor from a Special Infected while on the ground.
CLEAN KILL
Not unlocked yetShove a Boomer and then kill him without him splashing on anyone.
STAND TALL
Not unlocked yetSurvive a campaign without being incapacitated.
BACK 2 HELP
Not unlocked yetLeave a safe room to save an incapped teammate and bring them back safely.
ZOMBICIDAL MANIAC
Not unlocked yetSurvive any campaign on Expert.
WHAT ARE YOU TRYING TO PROVE?
Not unlocked yetSurvive all campaigns on Expert.
NOTHING SPECIAL
Not unlocked yetSurvive a campaign with no Survivors taking damage from Special Infected.
BURN THE WITCH
Not unlocked yetLight a Witch with a Molotov.
TOWERING INFERNO
Not unlocked yetLight a Tank with a Molotov.
SPINAL TAP
Not unlocked yetKill an Infected with a single blow from behind.
STOMACH UPSET
Not unlocked yetAll Survivors complete a campaign without being vomited on.
BRAIN SALAD
Not unlocked yetMake 100 headshot kills.
JUMP SHOT
Not unlocked yetHeadshot a Hunter while he's leaping.
MERCY KILLER
Not unlocked yetSurvive the No Mercy campaign.
TOLL COLLECTOR
Not unlocked yetSurvive the Death Toll campaign.
DEAD BARON
Not unlocked yetSurvive the Dead Air campaign.
GRIM REAPER
Not unlocked yetSurvive the Blood Harvest campaign.
BARF BAGGED
Not unlocked yetCover four Survivors with Boomer bile at once.
BIG DRAG
Not unlocked yetDrag a Survivor 100 feet with your tongue as a Smoker.
CHAIN SMOKER
Not unlocked yetConstrict two Survivors on one life as a Smoker.
DOUBLE JUMP
Not unlocked yetPounce two different Survivors on one life as a Hunter.
All 4 Dead
Not unlocked yetKill all four Survivors on one life as a Tank.