- Back To Life
In an On-line Coop game, perform your first revival
- Itemizer
Pick up 250 powerups or items in one game
- Team Elite
Reach Wave 40 in an On-Line Barricade game
- Pyro
Set 250 zombies on fire with the incendary rounds in a single game
- Unseen
While cloaked, kill 250 zombies in one game
- American Hero
Kill over 5000 zombies in one game
- Big Game
In one game, kill two bosses without killing any other zombie in between
- Team Soldier
Reach Wave 30 in an On-Line Barricade game
- Assaulted
Kill 7 machine gun bosses in one barricade game within the first 30 waves
- Bullet Rain
Kill two Minigun zombie bosses within two minutes of each other
- Collector
Collect at least 20 perks in a single game
- Rhylos' 50
Collect a total of 50 achievements
- Boss Eliminator
Kill 50 bosses in one or more On-line coop games
- One Shot One Kill
Kill 250 zombies with the rage powerup in one game
- Grenadier
Get Shrapnel and Midair Trigger then get 500 kills with the grenade launcher
- Chain Reaction
Pick up Friendly Fire and use a Zombie Bomber's explosion to kill two more nearby bombers
- Boss Hunter
Get Friendly Fire, Mano a Mano and Boss Power then kill 5 bosses in one game
- Organizer
Host and play an On-line Coop game
- Defused
Kill 3 grenade bosses in one barricade game within the first 20 waves
- Fenced
In an On-line Coop game, hold out until wave 21 in Factory Barricade
- Headhunters
In an On-line Coop game, kill 20 bosses with your team in a single game
- Team Recruit
Reach Wave 20 in an On-Line Barricade game
- Armory
Get Stronghold, Regeneration, Armor, Counterblow, Aftershock then survive 10 minutes
- Boss Eraser
Kill 10 bosses in one or more On-line coop games
- Stopping Power
Kill 150 running zombies in a single game
- Machinist
In an On-line Coop game, upgrade a sentry gun to a weapon station
- Team Trainer
Reach Wave 10 in an On-Line Barricade game
- Fifteen Minutes In Jail
Survive for 15 minutes on the Prison barricade map
- Killstreak One
Reach a stats KillStreak of 1000 zombies
- Weapons Expert
Get Dexterity, Intensity, Accuracy, Heavy Ammo, Improved Loadout then get 1000 kills
- All 4 Deadly
Get Fire Team, Mirror Image and Wild Bunch, then get a ghost pickup
- TeleFrag
Perform 20 remote grenade detonations
- Demolitions Expert
Get Shrapnel and Remote Detonator then use 10 grenades in one game
- Cover
Kill 25 zombies while remaining inside one Turbine area
- Tough Guy
Kill 1000 zombies in any single game without ever picking a perk
- Right-Hand Man
Get ghosts to kill 25 zombies in one streak while killing none yourself
- Bouncer
Survive 5 waves in Single Player Warehouse Barricade without the lower sentries firing a single shot
- Ladies First
Kill 5 female zombies in one streak without killing a single male
- Warming Up
Kill 10,000 zombies
- Guardian
Complete the Point Defense mission
- Fire Chief
Burn 800 zombies with the Flame Thrower
- Well Supplied
Explode 3 propane gas tanks within a 10-second period
- Magnet
Collect 10 zombie-attracting Rammers in one game
- Victor
Kill all zombie boss types
- Survivor
Survive for more than 2 minutes in survival mode
- Stronghold
Kill 100 zombies in Survival Mode without moving from start of game
- Blockade
Survive for 15 attack waves in Barricade Mode
- Flak Jacket
Get hurt by and survive 10 Zombie Bomber explosions in one game
- Explosive Irony
Deal the killing blow to a Grenade Zombie with a grenade
- Fortress
Survive for 10 attack waves in Barricade Mode
- Execution
Kill at least 250 zombies using sentry guns
- Free Man
Finish off a boss zombie with the crowbar
- Held The Line
Reach Wave 8 in Bridge Barricade mode
- ColdBlooded
Survive for three attack waves in Barricade Mode without moving
- Untouchable
Complete any mission without taking any zombie damage
- Efficiency
Kill at least 10 zombies with one grenade
- Gunbarrel
Kill the minigun zombie boss
- SpeedKiller
Kill any boss within 30 seconds of the boss appearing
- Perforator
Get the minigun and kill 50 zombies with it inside 9 seconds
- Horde
Kill 50 zombies within a ten second period
- Arms Dealer
Get at least one kill with ten non-melee weapon in one game
- Hidden
Survive for the first 5 minutes in Survival mode without taking any damage
- Immortal
Survive for 10 minutes in a single Survival game