WING AND A PRAYER
Defend yourself at the crashed airliner without taking damage.
STILL SOMETHING TO PROVE
Survive all campaigns on Expert.
SEPTIC TANK
Use a bile bomb on a Tank.
BRIDGE OVER TREBLED SLAUGHTER
Cross the bridge finale in less than three minutes.
ONE HIT WONDER
As the Hunter, land a 25 damage pounce.
ROBBED ZOMBIE
Collect 10 vials of Boomer vomit from infected CEDA agents you have killed.
GOLDEN FREEMAN
Find the golden crowbars hidden in the Left 4 Dead 1 survival maps.
Valve Gift Grab 2011 – L4D2
Collect three gifts dropped by Special Infected in Versus Mode.
MUTANT OVERLORD
Play 6 Mutations.
SUPREME SACRIFICE
Complete "The Sacrifice".
THE MAIN ATTRACTION
On the concert finale, survive until the helicopter arrives without leaving the stage
HEAD HONCHO
Decapitate 200 Infected with a melee weapon.
ARMORY OF ONE
Deploy an ammo upgrade and have your team use it.
ROCKY HORROR PICTURE THROW
Destroy a Tank's rock in mid-air.
A LITTLE HACK AND SLASH
Earn a bronze medal on every official survival map
KILLING SPREE
Earn a gold medal on every official survival map.
LIKE LAMBS TO THE SLAUGHTER
Earn a silver medal on every official survival map.
POLE POSITION
Escape Liberty Mall's Atrium before the first Tank appears
HOUSEHOLD NAMES
Discover the hidden room in the Last Stand campaign
CONFEDERACY OF CRUNCHES
Finish a campaign using only melee weapons.
LICKETY-SPLIT
With a sharp melee weapon, cut a Smoker's tongue before he ensnares you.
GUARDIN' GNOME
Rescue Gnome Chompski from the Carnival.
FORE!
Knock off the heads of 18 infected with the golf club.
KILLING THEM SWIFTLY TO THIS SONG
Play the new Midnight Riders song on a jukebox.
GHOST OF CHRISTMAS PRESENT
Spread cheer by helping a free holiday player survive a campaign.
GOOD GUY NICK
Plays games with free weekend players and helps them survive a campaign.
CL0WND
Honk the noses of 10 Clowns.
BURNING SENSATION
Ignite 50 Common Infected with incendiary ammo.
VIOLENCE IN SILENCE
Navigate the impound lot and reach the cemetery safe room without tripping any alarms.
FRIED PIPER
Using a Molotov, burn a Clown leading at least 10 Common Infected.
CRASS MENAGERIE
Kill one of each Uncommon Infected.
CHAIN OF COMMAND
Kill 100 Common Infected with the chainsaw.
GET SKEETED ON
Kill a pouncing Hunter with a shotgun.
BARREL ROLLED
Kill a Special Infected with an exploding barrel.
ACID REFLEX
Kill a Spitter before she is able to spit.
DEAD IN THE WATER
Kill 10 swampy Mudmen while they are in the water.
KITE LIKE A MAN
Kill a Tank only with damage from the original Survivors.
TANK BURGER
Kill a Tank with melee weapons.
NEW HAIRCUT
Kill a Witch using only a sharp melee weapon, without anyone getting incapacitated or killed.
CLUB DEAD
Use every melee weapon to kill Common Infected.
Z-GENOCIDEST 2: EPISODE 2
Kill 53,599 infected. You made sure the dead won't rise anymore!
PURE SATISFACTION
Kill 20 Jockeys with the shovel or pitchfork.
DISMEMBERMENT PLAN
Kill 15 Infected with a single grenade launcher blast.
TIL IT GOES CLICK
Using the M60, kill 25 infected without letting go of the trigger.
THE LAST DASH
Complete The Last Stand campaign in 13 minutes or less, without any Survivors dying.
LEVEL A CHARGE
Kill a Charger with a melee weapon while they are charging.
SHOTGUN WEDDING
Kill the Witch bride with a single shotgun blast on expert difficulty.
CACHE GRAB
Open 5 foot lockers.
SHOCK JOCK
Revive 10 dead Survivors with the defibrillator.
THREE’S A CROWD
Rescue three Survivors from a single rescue closet.
ELEPHANT IN THE ROOM
Revive an incapacitated teammate while a Tank is nearby.
CHAOS GENERATOR
Have all 3 generators running at once in "The Sacrifice" finale.
KILL BILL
Have Bill sacrifice himself for the team.
A RIDE DENIED
Kill a Jockey within 2 seconds of it jumping on a Survivor.
GAS SHORTAGE
Cause 25 gas can drops as a Special Infected.
CACHE AND CARRY
Collect 15 gas cans in a single Scavenge round.
GAS GUZZLER
Collect 100 gas cans in Scavenge.
GRAVE ROBBER
Collect 10 items dropped by a Fallen Survivor.
FUEL CRISIS
Make a Survivor drop a gas can during overtime.
PORT OF SCAVENGE
Play 5 full games of Scavenge on The Port.
SCAVENGE HUNT
Stop the enemy team from collecting any gas cans during a Scavenge round.
HUNTING PARTY
Win a game of Scavenge.
THE QUICK AND THE DEAD
Revive 10 incapacitated Survivors while under the speed-boosting effects of adrenaline.
STACHE WHACKER
Prove you are faster than Moustachio.
GONG SHOW
Prove you are stronger than Moustachio.
GETTING STARTED
Earn a bronze medal on any official Survival map.
BEAT THE RUSH
In a Survival round, get a medal only using melee weapons.
THIS IS WHERE THE FUN BEGINS
Earn a gold medal on any official survival map.
ON OUR WAY
Earn a silver medal on any official survival map.
THE BIG TEN
Survive for 10 minutes on any official map in Versus Survival.
SUPREME SURVIVALIST
Survive for 30 minutes on any official survival map.
BRIDGE BURNER
Survive the Parish campaign.
STREAM CROSSER
Survive the Cold Stream campaign on any difficulty.
THE REAL DEAL
Survive a campaign on Expert skill with Realism mode enabled.
STILL STANDING
Survive The Last Stand campaign on any difficulty.
THE LAST FRONTIER
Survive The Last Stand campaign on Expert Realism.
PRICE CHOPPER
Survive the Dead Center campaign.
MIDNIGHT RIDER
Survive the Dark Carnival campaign.
RAGIN' CAJUN
Survive the Swamp Fever campaign.
TORCH BEARER
Survive The Passing Campaign.
WEATHERMAN
Survive the Hard Rain campaign.
FAT NINJA
As the Boomer, vomit on a Survivor without having direct line of sight with them.
SCATTERING RAM
As the Charger, bowl through the entire enemy team in a single charge.
WEDDING CRASHER
As the Charger, grab a Survivor and crash them through 8 chairs at the wedding.
MEAT TENDERIZER
As the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds.
FLIGHT DECK
Instantly kill a Survivor as the Charger.
LONG DISTANCE CARRIER
As the Charger, grab a Survivor and carry them over 80 feet.
CONNECTING FIGHTS
Play a Versus game on Dead Air from start to finish.
STRENGTH IN NUMBERS
Form a team and beat an enemy team in 4v4 Versus or Scavenge.
RODE HARD, PUT AWAY WET
As the Jockey, ride a Survivor and steer them into a Spitter's acid patch.
QUALIFIED RIDE
As the Jockey, ride a Survivor for more than 12 seconds.
BACK IN THE SADDLE
As the Jockey, ride the Survivors twice in a single life.
HEARTWARMER
In a Versus round, leave the saferoom to defibrillate a dead teammate.
SACRIFIZZLE
As a Special Infected, incap someone who is trying to sacrifice themselves.
I SPIT ON YOUR GRAVE
As the Spitter, spit on a Survivor who is pinned by a Charger.
GREAT EXPECTORATIONS
As the Spitter, hit every Survivor with a single acid patch.
SPITFIRE
Destroy 20 gascans as the Spitter.
ACID BATH
As the Spitter, spit on a Survivor who is pinned by a Hunter.
A SPITTLE HELP FROM MY FRIENDS
As the Spitter, spit on a Survivor being choked by a Smoker.
SOB STORY
Navigate the sugar mill and reach the safe room without killing any Witches.
GNOME ALONE
If you are reading this achievement, Gabe Newell has successfully launched Gnome Chompski into space.