ACHIEVEMENT - HOW TO UNLOCK A RIDE DENIED - Kill a Jockey within 2 seconds of it jumping on a Survivor. A SPITTLE HELP FROM MY FRIENDS - As the Spitter, spit on a Survivor being choked by a Smoker. ACID REFLEX - Kill a Spitter before she is able to spit. ARMORY OF ONE - Deploy an ammo upgrade and have your team use it. BACK IN THE SADDLE - As the Jockey, ride the Survivors twice in a single life. BARREL ROLLED - Kill a Special Infected with an exploding barrel. BEAT THE RUSH - In a Survival match, get a medal only using melee weapons. BRIDGE BURNER - Survive the Parish campaign. BRIDGE OVER TREBLED SLAUGHTER - Cross the bridge finale in less than 3 minutes. BURNING SENSATION - Ignite 50 Common Infected with incendiary ammo. CACHE AND CARRY - Collect 15 gas cans in a single Scavenge match. CHAIN OF COMMAND - Kill 100 Common Infected with the chainsaw. CHAOS GENERATOR - Have all 3 generators running at once in "The Sacrifice" finale. CL0WND - Honk the noses of 10 Clowns. CLUB DEAD - Use every melee weapon to kill Common Infected. CONFEDERACY OF CRUNCHES - Finish a campaign using only melee weapons. Connecting Fight - Play a Versus game on Dead Air from start to finish. CRASS MENAGERIE - Kill one of each Uncommon Infected. DEAD IN THE WATER - Kill 10 swampy Mudmen while they are in the water. DISMEMBERMENT PLAN - Kill 15 Infected with a single grenade launcher blast. FRIED PIPER - Use a Molotov to burn a Clown leading at least 10 Common Infected. FUEL CRISIS - Make a Survivor drop a gas can during overtime. GAS GUZZLER - Collect 100 gas cans in Scavenge. GAS SHORTAGE - Cause 25 gas can drops as a Special Infected. GONG SHOW - Prove you are stronger than Moustachio. GREAT EXPECTORATIONS - As the Spitter, hit every Survivor with a single acid patch. GUARDIN' GNOME - Rescue Gnome Chompski from the Carnival. HEAD HONCHO - Decapitate 200 Infected with a melee weapon. HEARTWARMER - In a Versus match, leave the saferoom to defibrillate a dead teammate. HUNTING PARTY - Win a game of Scavenge. KILL BILL - Have Bill sacrifice himself for the team. LEVEL A CHARGE - Kill a Charger with a melee weapon while they are charging someone. LONG DISTANCE CARRIER - As the Charger, grab a Survivor and carry them over 80 feet. MEAT TENDERIZER - As the Charger, grab a Survivor and smash them into the ground for a solid 15 seconds. MIDNIGHT RIDER - Survive the Dark Carnival campaign. PRICE CHOPPER - Survive the Dead Center campaign. QUALIFIED RIDE - As the Jockey, ride a Survivor for more than 8 seconds. RAGIN' CAJUN - Survive the Swamp Fever campaign. ROBBED ZOMBIE - Collect 10 vials of Boomer vomit from infected CEDA agents you have killed. RODE HARD, PUT AWAY WET - As the Jockey, ride a Survivor and steer them into a Spitter's acid patch. SACRIFIZZLE - As a Special Infected, incap someone who is trying to sacrifice themselves. SCATTERING RAM - As the Charger, bowl through the entire enemy team in a single charge. SCAVENGER HUNT - Stop the enemy team from collecting any gas cans during a Scavenge match. SEPTIC TANK - Use a bile grenade on a Tank. SHOCK JOCK - Revive 10 dead Survivors with the defibrillator. SOB STORY - Navigate the sugar mill and reach the safe room without killing any Witches. SPIT HAPPENS - As the Spitter, hit every Survivor with a single acid patch. STACHE WHACKER - Prove you are faster than Moustachio. STILL SOMETHING TO PROVE - Survive all campaigns on Expert. Stream Crosser - Survive the Cold Stream campaign on any difficulty. STRENGTH IN NUMBERS - Form a team and beat an enemy team in 4v4 Versus or Scavenge. TANK BURGER - Kill a Tank with melee weapons. THE QUICK AND THE DEAD - Revive 10 incapacitated Survivors while under the speed boosting effects of adrenaline. THE REAL DEAL - Survive a campaign on Expert difficulty with Realism mode enabled. Valve Gift Grab 2011 – L4D2 - Collect three gifts dropped by Special Infected in Versus Mode. VIOLENCE IN SILENCE - Navigate the impound lot and reach the cemetary safe room without tripping any alarms. WEATHERMAN - Survive the Hard Rain campaign. WING AND A PRAYER - Defend yourself at the crashed airliner without taking damage.
"The Passing" achievements ACHIEVEMENT - HOW TO UNLOCK Torch Bearer (20 points) - Survive The Passing Campaign. Wedding Crasher (30 points) - As the Charger, grab a Survivor and crash them through 8 chairs at the wedding. Til It Goes Click (20 points) - Using the M60, kill 25 infected without letting go of the trigger. Grave Robber (25 points) - Collect 10 items dropped by a Fallen Survivor. Mutant Overlord (30 points) - Play 6 Mutations. Fore! (25 points) - Knock off the heads of 18 infected with the golf club. Killing 'Em Swiftly To This Song (20 points) - Play the new Midnight Riders song on a jukebox. Kite Like A Man (30 points) - Kill a Tank only with damage from the original Survivors. Cache Grab (20 points) - Open 5 foot lockers. Port Of Scavenge (30 points) - Play 5 full games of Scavenge on The Port points.