"The Sacrifice” is the new add-on for Left 4 Dead.
THE LITTLEST GENOCIDE
Not unlocked yetKill 5,359 Infected in the Crash Course campaign.
ZOMBIE GENOCIDEST
Not unlocked yetKill 53,595 Infected.
NO-ONE LEFT BEHIND
Not unlocked yetBeat a campaign with all 4 Survivors.
PYROTECHNICIAN
Not unlocked yetBlow up 20 Infected in a single explosion.
TOWERING INFERNO
Not unlocked yetLight a Tank with a Molotov.
BURN THE WITCH
Not unlocked yetLight a Witch with a Molotov.
101 CREMATIONS
Not unlocked yetSet 101 Infected on fire.
AKIMBO ASSASSIN
Not unlocked yetSurvive an entire campaign using only pistols.
JUMPIN' JACK SMASH
Not unlocked yetPounce a Survivor for 25 points of damage in the Crash Course campaign.
Supreme Sacrifice
Not unlocked yetComplete "The Sacrifice".
CHAIN SMOKER
Not unlocked yetConstrict two Survivors on one life as a Smoker.
BARF BAGGED
Not unlocked yetCover four Survivors with Boomer bile at once.
GROUND COVER
Not unlocked yetSave another Survivor from a Special Infected while on the ground.
DEAD WRECKENING
Not unlocked yetDole out 5000 total Survivor damage as a Special Infected.
DO NOT DISTURB
Not unlocked yetSneak past all Witches in a campaign without disturbing one.
SLIPPERY PULL
Not unlocked yetSmoker pull a bile-covered Survivor until you hold him during Crash Course.
BIG DRAG
Not unlocked yetDrag a Survivor 100 feet with your tongue as a Smoker.
DISTINGUISHED SURVIVOR
Not unlocked yetEarn at least a Bronze medal on every official Survival level.
LEGENDARY SURVIVOR
Not unlocked yetEarn a Gold medal on every official Survival level.
HEROIC SURVIVOR
Not unlocked yetEarn at least a Silver medal on every official Survival level.
BRONZE METTLE
Not unlocked yetEarn a Bronze medal in Survival mode on any official level.
VIOLENCE IS GOLDEN
Not unlocked yetEarn a Gold medal in Survival mode on any official level.
SILVER BULLETS
Not unlocked yetEarn a Silver medal in Survival mode on any official level.
PHARM-ASSIST
Not unlocked yetGive pain pills to 10 Survivors.