- Resurrector
In an On-line Coop game, perform three revivals 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
- Back2Back
In an On-line Coop game, stay within reaching distance of another player while not taking damage for 30 seconds
- Organizer
Host and play an On-line Coop game
- Team Recruit
Reach Wave 20 in an On-Line Barricade game
- Boss Eraser
Kill 10 bosses in one or more On-line coop games
- Shock Expert
In an On-line coop game, play as the Scout and detonate 5 flash bangs in a single game
- Team Trainer
Reach Wave 10 in an On-Line Barricade game
- Machinist
In an On-line Coop game, upgrade a sentry gun to a weapon station
- American Hero
Kill over 5000 zombies in one game
- Hat-trick
Achievement description available at game update
- Chain Reaction
Pick up Friendly Fire and use a Zombie Bomber's explosion to kill two more nearby bombers
- Rhylos' 50
Collect a total of 50 achievements
- Big Game
In one game, kill two bosses without killing any other zombie in between
- Bucket Of Nails
Without receiving any damage from the start of a game, pick up a nailgun and fire 5000 nails
- Killstreak One
Reach a stats KillStreak of 1000 zombies
- Grenadier
Get Shrapnel and Midair Trigger then get 500 kills with the grenade launcher
- 2x9MM
In one game kill 2 bosses using the Dual Glocks
- Itemizer
Pick up 250 powerups or items in one game
- Boss Hunter
Get Friendly Fire, Mano a Mano and Boss Power then kill 5 bosses in one game
- TeleFrag
Perform 20 remote grenade detonations
- Demolitions Expert
Get Shrapnel and Remote Detonator then use 10 grenades in one game
- Stopping Power
Kill 150 running zombies in a single game
- Weapons Expert
Get Dexterity, Intensity, Accuracy, Heavy Ammo, Improved Loadout then get 1000 kills
- Collector
Collect at least 20 perks in a single game
- Time Traveler
Accumulate 90 seconds of Bullet Time in one single player game
- No Guns
Kill 500 zombies with a melee weapon
- Cover
Kill 25 zombies while remaining inside one Turbine area
- All 4 Deadly
Get Fire Team, Mirror Image and Wild Bunch, then get a ghost pickup
- Held The Line
Reach Wave 8 in Bridge Barricade mode
- Stronghold
Kill 100 zombies in Survival Mode without moving from start of game
- Fire Chief
Burn 800 zombies with the Flame Thrower
- Free Man
Finish off a boss zombie with the crowbar
- Pyro
Set 250 zombies on fire with the incendary rounds in a single game
- Double Duty
Achievement description available at game update
- One Shot One Kill
Kill 250 zombies with the rage powerup in one game
- Unseen
While cloaked, kill 250 zombies in one game
- Defused
Kill 3 grenade bosses in one barricade game within the first 20 waves
- Flasher
Kill 100 zombies stunned by flashbangs in one game
- Blockade
Survive for 15 attack waves in Barricade Mode
- Magnet
Collect 10 zombie-attracting Rammers in one game
- Fortress
Survive for 10 attack waves in Barricade Mode
- Well Supplied
Explode 3 propane gas tanks within a 10-second period
- Warming Up
Kill 10,000 zombies
- LockDown
Reach wave 2 in warehouse barricade without any zombie breaching the fence perimeter
- Bouncer
Survive 5 waves in Single Player Warehouse Barricade without the lower sentries firing a single shot
- Execution
Kill at least 250 zombies using sentry guns
- Explosive Irony
Deal the killing blow to a Grenade Zombie with a grenade
- Arms Dealer
Get at least one kill with ten non-melee weapon in one game
- Winner
Complete all the story missions
- Ladies First
Kill 5 female zombies in one streak without killing a single male
- Victor
Kill all zombie boss types
- Right-Hand Man
Get ghosts to kill 25 zombies in one streak while killing none yourself
- Gunbarrel
Kill the minigun zombie boss
- Guardian
Complete the Point Defense mission
- Survivor
Survive for more than 2 minutes in survival mode
- Wipeout
In Free Play or Survival, kill 100 zombies within the first 30 seconds of the game
- Perforator
Get the minigun and kill 50 zombies with it inside 9 seconds
- Efficiency
Kill at least 10 zombies with one grenade
- Horde
Kill 50 zombies within a ten second period
- SpeedKiller
Kill any boss within 30 seconds of the boss appearing
- Untouchable
Complete any mission without taking any zombie damage