- Organizer
Host and play an On-line Coop game
- Headhunters
In an On-line Coop game, kill 20 bosses with your team in a single game
- Explosives Expert
In an On-line coop game, play as the Gunner and detonate 50 explosives (grenades, dynamite) in a single 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
- Fenced
In an On-line Coop game, hold out until wave 21 in Factory Barricade
- Team Trainer
Reach Wave 10 in an On-Line Barricade game
- Winner
Complete all the story missions
- Stronghold
Kill 100 zombies in Survival Mode without moving from start of game
- Moths to the Flame
Set fire to 50 zombies that are being attracted by a Rammer in a single game
- Boogeyman
Survive for 15 waves on The Farm barricade map
- Fire Chief
Burn 800 zombies with the Flame Thrower
- American Hero
Kill over 5000 zombies in one game
- Rhylos' 50
Collect a total of 50 achievements
- Butchered
Kill 5 butcher bosses in one barricade game within the first 25 waves
- Runner
Run a marathon length 26 miles/42 kms
- Bullet Rain
Kill two Minigun zombie bosses within two minutes of each other
- Slaughter
Kill 100,000 zombies
- Pyro
Set 250 zombies on fire with the incendary rounds in a single game
- Free Man
Finish off a boss zombie with the crowbar
- Itemizer
Pick up 250 powerups or items in one game
- Grenadier
Get Shrapnel and Midair Trigger then get 500 kills with the grenade launcher
- Boss Hunter
Get Friendly Fire, Mano a Mano and Boss Power then kill 5 bosses in one game
- Flatliner
Bring yourself back to full health after nearly dying with Last Breath
- Molotov Grill
Pick only four perks: Fire Starter, Friendly Fire, Remote Detonator and Molotov, and detonate 12 molotov grenades
- Unseen
While cloaked, kill 250 zombies in one game
- Held The Line
Reach Wave 8 in Bridge Barricade mode
- Fifteen Minutes In Jail
Survive for 15 minutes on the Prison barricade map
- Well Supplied
Explode 3 propane gas tanks within a 10-second period
- Collector
Collect at least 20 perks in a single game
- All 4 Deadly
Get Fire Team, Mirror Image and Wild Bunch, then get a ghost pickup
- Weapons Expert
Get Dexterity, Intensity, Accuracy, Heavy Ammo, Improved Loadout then get 1000 kills
- Demolitions Expert
Get Shrapnel and Remote Detonator then use 10 grenades in one game
- ColdBlooded
Survive for three attack waves in Barricade Mode without moving
- Big Game
In one game, kill two bosses without killing any other zombie in between
- Right-Hand Man
Get ghosts to kill 25 zombies in one streak while killing none yourself
- Guardian
Complete the Point Defense mission
- Not Addicted
Pick up 10 health power-ups in one game when your health is at 100%
- TeleFrag
Perform 20 remote grenade detonations
- Killstreak One
Reach a stats KillStreak of 1000 zombies
- Chain Reaction
Pick up Friendly Fire and use a Zombie Bomber's explosion to kill two more nearby bombers
- Blockade
Survive for 15 attack waves in Barricade Mode
- One Shot One Kill
Kill 250 zombies with the rage powerup in one game
- Time Traveler
Accumulate 90 seconds of Bullet Time in one single player game
- Stopping Power
Kill 150 running zombies in a single game
- Magnet
Collect 10 zombie-attracting Rammers in one game
- Explosive Irony
Deal the killing blow to a Grenade Zombie with a grenade
- Efficiency
Kill at least 10 zombies with one grenade
- Perforator
Get the minigun and kill 50 zombies with it inside 9 seconds
- Defused
Kill 3 grenade bosses in one barricade game within the first 20 waves
- Victor
Kill all zombie boss types
- Fortress
Survive for 10 attack waves in Barricade Mode
- Warming Up
Kill 10,000 zombies
- SpeedKiller
Kill any boss within 30 seconds of the boss appearing
- Execution
Kill at least 250 zombies using sentry guns
- Arms Dealer
Get at least one kill with ten non-melee weapon in one game
- Bouncer
Survive 5 waves in Single Player Warehouse Barricade without the lower sentries firing a single shot
- Gunbarrel
Kill the minigun zombie boss
- Flasher
Kill 100 zombies stunned by flashbangs in one game
- Horde
Kill 50 zombies within a ten second period
- Survivor
Survive for more than 2 minutes in survival mode
- Ladies First
Kill 5 female zombies in one streak without killing a single male
- Untouchable
Complete any mission without taking any zombie damage