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