- Warming Up
Kill 10,000 zombies
- Machinist
In an On-line Coop game, upgrade a sentry gun to a weapon station
- Fenced
In an On-line Coop game, hold out until wave 21 in Factory Barricade
- Molotov Grill
Pick only four perks: Fire Starter, Friendly Fire, Remote Detonator and Molotov, and detonate 12 molotov grenades
- 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
- Organizer
Host and play an On-line Coop game
- Close Encounter
In an On-line Coop game, kill a boss with a melee weapon
- Walker
Complete the Walker mission on any silver or gold star level
- Fire Chief
Burn 800 zombies with the Flame Thrower
- One Shot One Kill
Kill 250 zombies with the rage powerup in one game
- Too Close For Comfort
Kill 25 Bombers with a Steam Hammer in one game while staying outside their explosion range
- Magnet
Collect 10 zombie-attracting Rammers in one game
- Rhylos' 50
Collect a total of 50 achievements
- TeleFrag
Perform 20 remote grenade detonations
- Moths to the Flame
Set fire to 50 zombies that are being attracted by a Rammer in a single game
- Butcher
Get 10 zombies sucked into one Meat Grinder
- Unseen
While cloaked, kill 250 zombies in one game
- Collector
Collect at least 20 perks in a single game
- Flasher
Kill 100 zombies stunned by flashbangs in one game
- Stopping Power
Kill 150 running zombies in a single game
- Boss Hunter
Get Friendly Fire, Mano a Mano and Boss Power then kill 5 bosses in one game
- 2x9MM
In one game kill 2 bosses using the Dual Glocks
- Cover
Kill 25 zombies while remaining inside one Turbine area
- No Guns
Kill 500 zombies with a melee weapon
- Flak Jacket
Get hurt by and survive 10 Zombie Bomber explosions in one game
- Dive Bomber
In one game dive jump through 10 Zombie Bombers causing them to detonate themselves
- Death Cheat
Survive 5 minutes with health staying below 25%
- Armory
Get Stronghold, Regeneration, Armor, Counterblow, Aftershock then survive 10 minutes
- Explosive Irony
Deal the killing blow to a Grenade Zombie with a grenade
- Grenadier
Get Shrapnel and Midair Trigger then get 500 kills with the grenade launcher
- Breather
Pick up health then survive 25 seconds in Free Play without damage or firing a single shot
- Flatliner
Bring yourself back to full health after nearly dying with Last Breath
- Pushover
In one game, kick a zombie after that same zombie hurt you and repeat 20x
- Blockade
Survive for 15 attack waves in Barricade Mode
- Weapons Expert
Get Dexterity, Intensity, Accuracy, Heavy Ammo, Improved Loadout then get 1000 kills
- Execution
Kill at least 250 zombies using sentry guns
- Ton Of Bullets
Fire 10000 bullets in Free Play, Barricade or Survival mode while not receiving any zombie damage
- Gunslinger
Complete any mission on 3 silver-star level using only the default Glock
- All 4 Deadly
Get Fire Team, Mirror Image and Wild Bunch, then get a ghost pickup
- Not Addicted
Pick up 10 health power-ups in one game when your health is at 100%
- Demolitions Expert
Get Shrapnel and Remote Detonator then use 10 grenades in one game
- Tough Guy
Kill 1000 zombies in any single game without ever picking a perk
- Perforator
Get the minigun and kill 50 zombies with it inside 9 seconds
- Chain Reaction
Pick up Friendly Fire and use a Zombie Bomber's explosion to kill two more nearby bombers
- Free Man
Finish off a boss zombie with the crowbar
- Bouncer
Survive 5 waves in Single Player Warehouse Barricade without the lower sentries firing a single shot
- LockDown
Reach wave 2 in warehouse barricade without any zombie breaching the fence perimeter
- Arms Dealer
Get at least one kill with ten non-melee weapon in one game
- Fortress
Survive for 10 attack waves in Barricade Mode
- Held The Line
Reach Wave 8 in Bridge Barricade mode
- Gunbarrel
Kill the minigun zombie boss
- ColdBlooded
Survive for three attack waves in Barricade Mode without moving
- Victor
Kill all zombie boss types
- Guardian
Complete the Point Defense mission
- Right-Hand Man
Get ghosts to kill 25 zombies in one streak while killing none yourself
- SpeedKiller
Kill any boss within 30 seconds of the boss appearing
- Untouchable
Complete any mission without taking any zombie damage
- Survivor
Survive for more than 2 minutes in survival mode
- Stronghold
Kill 100 zombies in Survival Mode without moving from start of game
- Ladies First
Kill 5 female zombies in one streak without killing a single male
- Horde
Kill 50 zombies within a ten second period
- Efficiency
Kill at least 10 zombies with one grenade