Left 4 Dead

Helping Hand
Uncommon

Revive 50 incapacitated Survivors.

Field Medic
Uncommon

Heal 25 Survivors with a first aid kit.

Pharm-assist
Uncommon
My Bodyguard
Common

Protect any Survivor from an attacking Infected 50 times.

Dead Stop
Common

Punch a Hunter as he is pouncing.

Cr0wnd
Uncommon

Cr0wnd

30

Kill a Witch with a single headshot.

Untouchables
Rare

No Survivors take damage after contacting the rescue vehicle.

Drag and Drop
Common

Rescue a Survivor from a Smoker's tongue before he takes damage.

Blind Luck
Common

You or another Survivor take no damage after being vomited on by a Boomer.

Akimbo Assassin
Uncommon

Survive an entire campaign using only pistols.

Hero Closet
Common

Rescue a Survivor trapped in a closet.

Hunter Punter
Common

Shove a Hunter off of a pinned and helpless Survivor.

Tongue Twister
Common

Free yourself from a Smoker who has grabbed you with his tongue.

No Smoking Section
Common

Kill 10 Smokers as they are pulling helpless Survivors.

Do Not Disturb
Uncommon

Sneak past all Witches in a campaign without disturbing one.

Tankbusters
Common

Kill a Tank without it dealing any damage to a Survivor.

Safety First
Rare

Play an entire campaign with no Survivors taking friendly fire damage.

No-one Left Behind
Common

Beat a campaign with all 4 Survivors.

Unbreakable
Rare

Finish a campaign without ever being healed.

Witch Hunter
Common

Kill a Witch without any Survivor taking damage from her.

Red Mist
Rare

Kill 1000 Infected with a mounted machine gun.

Pyrotechnician
Common

Blow up 20 Infected in a single explosion.

Dead Giveaway
Common

Heal a fellow Survivor when your own health is below 10.

Stand Tall
Uncommon

Survive a campaign without being incapacitated.

Nothing Special
Rare

Survive a campaign with no Survivors taking damage from Special Infected.

Burn the Witch
Common
Spinal Tap
Common

Kill an Infected with a single blow from behind.

Stomach Upset
Rare

All Survivors complete a campaign without being vomited on.

Jump Shot
Uncommon

Headshot a Hunter while he's leaping.

Mercy Killer
Common
Back 2 Help
Uncommon

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

Toll Collector
Common
Dead Baron
Common
Grim Reaper
Common

Survive the Blood Harvest campaign.

Ground Cover
Common

Save another Survivor from a Special Infected while on the ground.

Clean Kill
Common

Shove a Boomer and then kill him without him splashing on anyone.

Big Drag
Rare

Drag a Survivor 100 feet with your tongue.

Chain Smoker
Uncommon

Constrict two Survivors in one life as a Smoker.

Barf Bagged
Rare

Cover four Survivors with Boomer bile at once.

Double Jump
Uncommon

Pounce two different Survivors in one life as a Hunter.

All 4 Dead
Rare

Kill all four Survivors in one life while playing as a Tank.

Dead Wreckening
Rare

Dole out 5000 total Survivor damage as a Special Infected.

Lamb 2 Slaughter
Rare

As an Infected, incap a Survivor who has entered and left a safe room.

Title Update: Crash Course

10 Achievements worth 250 Gamerscore
Crash-proof
Rare

Survive the Crash Course Campaign.

Quick Power
Rare

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

The Littlest Genocide
Ultra Rare

Kill 5,359 Infected in the Crash Course campaign.

Smash Hit
Ultra Rare

Win a Versus campaign of Crash Course.

Truck Stop
Ultra Rare

Your team wipes all Survivors after the escape vehicle has opened in Crash Course.

20 Car Pile-up
Rare

As a Tank hit 20 Survivors with a car in the Crash Course campaign.

Jumpin' Jack Smash
Ultra Rare

Pounce a Survivor for 25 points of damage in the Crash Course campaign.

Slippery Pull
Ultra Rare

Smoker pull a bile-covered Survivor until you hold him during Crash Course.

Tank Stumble
Rare

Stun a Tank with an explosion in the Crash Course campaign.

Wipefest
Rare

Your team incapacitates three Survivors within five seconds in the Crash Course campaign.

Title Update: The Sacrifice

5 Achievements worth 250 Gamerscore
Kill Bill
Ultra Rare

Have Bill sacrifice himself for the team.

Barrel Rolled
Ultra Rare

Kill a Special Infected with an exploding barrel.

Chaos Generator
Ultra Rare

Have all 3 generators running at once in "The Sacrifice" finale.

Sacrifizzle
Ultra Rare

As a Special Infected, incap someone who is trying to sacrifice themselves.

65
1,500
2,739
597
274
Developer
Valve Corporation
Publisher
EA Games
Platforms
Xbox 360