Left 4 Dead achievements

23.11%

Quick Power

Restart the generator within 30 seconds of it shutting off in the Crash Course campaign.

25.28%

BRONZE METTLE

Earn a Bronze medal in Survival mode on any official level.

26.13%

FIELD MEDIC

Heal 25 Survivors with a first aid kit.

26.30%

DO NOT DISTURB

Sneak past all Witches in a campaign without disturbing one.

27.88%

Helping Hand

Revive 50 incapacitated Survivors.

29.44%

Back 2 Help

Leave a safe room to save an incapped teammate and bring them back safely.

30.51%

Pharm-assist

Give pain pills to 10 Survivors.

30.88%

Chain Smoker

Constrict two Survivors in one life as a Smoker.

31.92%

Double Jump

Pounce two different Survivors in one life as a Hunter.

34.24%

OUTBREAK

Catch a rare strain of infection, then pass it on to someone else.

36.21%

Crash-proof

Survive the Crash Course Campaign.

36.64%

Stand Tall

Survive a campaign without being incapacitated.

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