- Explosives Expert
In an On-line coop game, play as the Gunner and detonate 50 explosives (grenades, dynamite) in a single game
- Close Encounter
In an On-line Coop game, kill a boss with a melee weapon
- Flatliner
Bring yourself back to full health after nearly dying with Last Breath
- Too Close For Comfort
Kill 25 Bombers with a Steam Hammer in one game while staying outside their explosion range
- 2x9MM
In one game kill 2 bosses using the Dual Glocks
- 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
- All 4 Deadly
Get Fire Team, Mirror Image and Wild Bunch, then get a ghost pickup
- Dive Bomber
In one game dive jump through 10 Zombie Bombers causing them to detonate themselves
- Flak Jacket
Get hurt by and survive 10 Zombie Bomber explosions in one game
- Itemizer
Pick up 250 powerups or items in one game
- TeleFrag
Perform 20 remote grenade detonations
- Rhylos' 50
Collect a total of 50 achievements
- Right-Hand Man
Get ghosts to kill 25 zombies in one streak while killing none yourself
- Running On Empty
From the start of a game, survive for 15 minutes without holding or picking up any grenades
- Runner
Run a marathon length 26 miles/42 kms
- Pinpoint
In a single FreePlay game, survive for 5 minutes without your stats accuracy dropping below 50%
- Tough Guy
Kill 1000 zombies in any single game without ever picking a perk
- Well Supplied
Explode 3 propane gas tanks within a 10-second period
- Resurrector
In an On-line Coop game, perform three revivals in a single game
- Held The Line
Reach Wave 8 in Bridge Barricade mode
- Killstreak One
Reach a stats KillStreak of 1000 zombies
- Hidden
Survive for the first 5 minutes in Survival mode without taking any damage
- Endure
Kill 1000 zombies in a single Survival game
- Immortal
Survive for 10 minutes in a single Survival game
- Flasher
Kill 100 zombies stunned by flashbangs in one game
- One Shot One Kill
Kill 250 zombies with the rage powerup in one game
- Unseen
While cloaked, kill 250 zombies in one game
- Time Traveler
Accumulate 90 seconds of Bullet Time in one single player game
- Collector
Collect at least 20 perks 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
- Perforator
Get the minigun and kill 50 zombies with it inside 9 seconds
- Fire Chief
Burn 800 zombies with the Flame Thrower
- Efficiency
Kill at least 10 zombies with one grenade
- Organizer
Host and play an On-line Coop game
- Magnet
Collect 10 zombie-attracting Rammers in one game
- Boogeyman
Survive for 15 waves on The Farm barricade map
- Free Man
Finish off a boss zombie with the crowbar
- Execution
Kill at least 250 zombies using sentry guns
- LockDown
Reach wave 2 in warehouse barricade without any zombie breaching the fence perimeter
- Pushover
In one game, kick a zombie after that same zombie hurt you and repeat 20x
- Death Cheat
Survive 5 minutes with health staying below 25%
- Arms Dealer
Get at least one kill with ten non-melee weapon in one game
- Stopping Power
Kill 150 running zombies in a single game
- Bouncer
Survive 5 waves in Single Player Warehouse Barricade without the lower sentries firing a single shot
- SpeedKiller
Kill any boss within 30 seconds of the boss appearing
- Bullet Rain
Kill two Minigun zombie bosses within two minutes of each other
- Headhunters
In an On-line Coop game, kill 20 bosses with your team in a single game
- Fortress
Survive for 10 attack waves in Barricade Mode
- Blockade
Survive for 15 attack waves in Barricade Mode
- Fenced
In an On-line Coop game, hold out until wave 21 in Factory Barricade
- Explosive Irony
Deal the killing blow to a Grenade Zombie with a grenade
- Breather
Pick up health then survive 25 seconds in Free Play without damage or firing a single shot
- Horde
Kill 50 zombies within a ten second period
- Ladies First
Kill 5 female zombies in one streak without killing a single male
- Stronghold
Kill 100 zombies in Survival Mode without moving from start of game
- Survivor
Survive for more than 2 minutes in survival mode
- Winner
Complete all the story missions
- Victor
Kill all zombie boss types
- Gunbarrel
Kill the minigun zombie boss
- Guardian
Complete the Point Defense mission
- Untouchable
Complete any mission without taking any zombie damage