DEAD CENTER

CHOCOLATE HELICOPTER:
Survive the Dead Center Campaign without any restarts

PARTY KILLER:
Survive the Passing Campaign without any restarts

MIDNIGHT RIDE:
Survive the Dark Carnival Campaign without any restarts

CRASHING FEVER:
Survive the Swamp Fever Campaign without any restarts

COMIN’ IN HARD:
Survive the Hard Rain Campaign without any restarts

THE GOOD ENDING:
Survive the Parish Campaign without any restarts

EXPERT SPECIALIST:
Survive any campaign on Expert skill ten times

PROVING YOURSELF A LEGEND:
Survive all L4D and L4D2 campaigns on Expert skill with Realism mode enabled and without any restarts

GOLDEN WARRIOR:
In The Last Stand Campaign, survive the campaign with the golden crowbar as your melee weapon

WORKSHOP BEGINNER:
Survive 15 different custom campaigns

WORKSHOP PLAYER:
Survive 30 different custom campaigns

WORKSHOP WARRIOR:
Survive 50 different custom campaigns

GRINDING SUCCESS:
Survive five campaigns in a row without any restarts

SPEED RUNNING SUCCESS:
Survive any campaign in ten minutes or less

CRASHING ROAD TRIP:
Survive the Crash Course campaign on Expert skill

DEAD, BUT NOT FORGOTTEN:
In the Passing campaign, use Bill's Assault Rifle and kill 250 infected

BLOOD BATH:
Kill 2500 Infected in a single campaign

SAD STORY:
In the Sacrifice campaign, be the only one who makes it on the bridge alive

CAMPAIGN COMPLETER:
Survive 2,590 campaigns

BLOOD BLIZZARD:
Survive the Cold Front custom campaign

DARKNESS BEHOLD:
Survive the Dark Parish custom campaign

GLUBTASTICAL:
Survive all Glubtastic custom campaigns on Expert mode with Realism mode enabled

LIVING LARGE, AND IN CHARGE:
As a Charger, kill all 4 survivors in one charge

SPITTING ON DEATH:
As a Spitter, spit on someone who is incapacitated

SMOKING JUSTICE:
As a Smoker, pull someone off a ledge

SPACEMAN:
As a Hunter, land a 25 pounce damage on the Dead Air campaign

BIG THINGS COME IN SMALL PACKAGES:
As a Jockey, ride a survivor off a ledge

BOOMING SENSATION:
As a Boomer, boom on all 4 survivors without direct line of sight with them

HAVING SOME FUN:
As a Special Infected, hide behind a Witch and make them shoot the Witch

BIG HANDS, BIG POWER:
As a Tank, kill all 4 survivors off a ledge with a single punch

BRINGING IN FRIENDS:
As a Special Infected, hide behind a car and make them shoot the car and alert the horde

THE SAD ENDING:
As a Special Infected, kill all 4 survivors as soon as they reach the end of the bridge in the Parish campaign

RAGING FIRE:
As a Charger, charge a survivor into fire

DOWNPOUR:
Earn any medal on the Hard Rain: Downpour custom campaign on survival mode

SURVIVAL SPECIALIST:
Survive for an hour on any official survival map

BRONZE BULLETS:
Earn a Bronze medal on 20 different custom survival maps

SILVER MODDED:
Earn a Silver medal on 20 different custom survival maps

GOLDEN WORKSHOP:
Earn a Gold medal on 20 different custom survival maps

GOLDEN GUY NICK:
Help a Free Weekend player get a gold medal on any official survival map

SPREADING JOY:
Help a Christmas player earn a gold medal on any official survival map

GOLD IN THE DARK:
Earn a Gold medal on all five The Dark Parish custom survival maps

HITTING HARD WITH GOLDEN GUNS:
Earn a Gold medal on Hard Rain: Downpour on Versus Survival

GOLDEN KILLERS:
Survive for ten minutes on every official Versus Survival map

BLOOD BATH:
Kill 2590 Infected in a single survival round

RAINING GAS:
Fill up ten gas cans in under two minutes

SPEEDY ADRENALINE:
Get five gas cans in one minute using an adrenaline

SCAVENGE CUP:
Win 100 scavenge games

POOL FULL OF ACID:
As a Spitter, spit on 100 gas cans.

ROUNDING RANGERS:
Complete 150 rounds of scavenge

TRIPLE THE GENOCIDES:
Kill 68,994 Infected

KILLING CRISIS:
Kill 1289 Infected with melee weapons

L4D2 GENOCIDES:
Kill 7895 Infected in L4D2 campaigns

TOO MUCH FREE TIME:
Play Left 4 Dead 2 for more than 10 hours in one day

L4D1 GENOCIDES:
Kill 5690 Infected in L4D1 campaigns

SHOWING NO MERCY:
Kill 2907 infected in the mercy hospital's roof

CRASHING DEPOT:
Kill 1689 infected in the truck depot

DEATH'S TOLL:
Kill 3789 infected at the boathouse

DEAD FLIGHT:
Kill 2890 infected at the airport

BLOOD HARVESTER:
Kill 3689 infected at the farmhouse

SACRIFICE SPECIALIST:
Kill 4890 infected at the port

THE LAST GENOCIDE:
Kill 5899 infected at the lighthouse

INFECTED CHOPPER:
Kill 1980 infected at liberty malls atrium

DARK KILLER:
Kill 4906 infected at the concert

KILLING FEVER:
Kill 3890 infected at the plantation

HARD BLOOD:
Kill 2908 infected at the burger tank

BRIDGE FULL OF BLOOD:
Kill 4589 infected at the bridge