- Perforator
Get the minigun and kill 50 zombies with it inside 9 seconds
- Fire Chief
Burn 800 zombies with the Flame Thrower
- Time Traveler
Accumulate 90 seconds of Bullet Time in one single player game
- Boss Eradicator
Kill 100 bosses in one or more On-line coop games
- Explosives Expert
In an On-line coop game, play as the Gunner and detonate 50 explosives (grenades, dynamite) in a single game
- Killstreak One
Reach a stats KillStreak of 1000 zombies
- Back2Back
In an On-line Coop game, stay within reaching distance of another player while not taking damage for 30 seconds
- Free Man
Finish off a boss zombie with the crowbar
- Close Encounter
In an On-line Coop game, kill a boss with a melee weapon
- Execution
Kill at least 250 zombies using sentry guns
- Rhylos' 50
Collect a total of 50 achievements
- Walker
Complete the Walker mission on any silver or gold star level
- Thirty Minutes In Jail
Survive for 30 minutes on the Prison barricade map
- Machinist
In an On-line Coop game, upgrade a sentry gun to a weapon station
- Fifteen Minutes In Jail
Survive for 15 minutes on the Prison barricade map
- Flak Jacket
Get hurt by and survive 10 Zombie Bomber explosions in one game
- Organizer
Host and play an On-line Coop game
- Warming Up
Kill 10,000 zombies
- Assaulted
Kill 7 machine gun bosses in one barricade game within the first 30 waves
- Boss Eliminator
Kill 50 bosses in one or more On-line coop games
- Boss Hunter
Get Friendly Fire, Mano a Mano and Boss Power then kill 5 bosses in one game
- Demolitions Expert
Get Shrapnel and Remote Detonator then use 10 grenades in one game
- Ladies First
Kill 5 female zombies in one streak without killing a single male
- Defused
Kill 3 grenade bosses in one barricade game within the first 20 waves
- Magnet
Collect 10 zombie-attracting Rammers in one game
- Big Game
In one game, kill two bosses without killing any other zombie in between
- All 4 Deadly
Get Fire Team, Mirror Image and Wild Bunch, then get a ghost pickup
- Right-Hand Man
Get ghosts to kill 25 zombies in one streak while killing none yourself
- Arms Dealer
Get at least one kill with ten non-melee weapon in one game
- Held The Line
Reach Wave 8 in Bridge Barricade mode
- Explosive Irony
Deal the killing blow to a Grenade Zombie with a grenade
- Boss Eraser
Kill 10 bosses in one or more On-line coop games
- Boogeymonster
Survive for 30 waves on The Farm barricade map
- Gunslinger
Complete any mission on 3 silver-star level using only the default Glock
- Winner
Complete all the story missions
- Victor
Kill all zombie boss types
- Horde
Kill 50 zombies within a ten second period
- Untouchable
Complete any mission without taking any zombie damage
- Guardian
Complete the Point Defense mission
- Efficiency
Kill at least 10 zombies with one grenade
- Resurrector
In an On-line Coop game, perform three revivals in a single game
- Shock Expert
In an On-line coop game, play as the Scout and detonate 5 flash bangs in a single game
- Team Red
Reach Wave 50 in an On-Line Barricade game
- Death Cheat
Survive 5 minutes with health staying below 25%
- Gunbarrel
Kill the minigun zombie boss
- Targeted
Kill 10 minigun bosses in one game
- Collector
Collect at least 20 perks in a single game
- Stopping Power
Kill 150 running zombies in a single game
- Sustained
In an On-line Coop game, revive another player and make sure they do not receive any damage for 15 seconds afterwards
- Back To Life
In an On-line Coop game, perform your first revival
- Team Elite
Reach Wave 40 in an On-Line Barricade game
- Team Soldier
Reach Wave 30 in an On-Line Barricade game
- Hat-trick
Achievement description available at game update
- Headhunters
In an On-line Coop game, kill 20 bosses with your team in a single game
- Bullet Rain
Kill two Minigun zombie bosses within two minutes of each other
- Team Recruit
Reach Wave 20 in an On-Line Barricade game
- Fenced
In an On-line Coop game, hold out until wave 21 in Factory Barricade
- SpeedKiller
Kill any boss within 30 seconds of the boss appearing
- Blockade
Survive for 15 attack waves in Barricade Mode
- Bouncer
Survive 5 waves in Single Player Warehouse Barricade without the lower sentries firing a single shot
- Team Trainer
Reach Wave 10 in an On-Line Barricade game
- Fortress
Survive for 10 attack waves in Barricade Mode
- Thinning The Horde
Kill 1,000,000 zombies