In one game kill 2500 enemies during Bullet Time powerups
Kill 1,000,000 zombies
Complete all missions on 5 gold-star level
Complete all missions on 5 silver-star level
Complete all missions at 5 bronze-star difficulty
Engage DOA mode in single player Free Play, then kill 50 zombies during a single DOA ghost powerup
Kill 250 bosses in one or more On-line coop games
Kill 50 bosses in one or more On-line coop games
Kill 100 bosses in one or more On-line coop games
Kill 10 bosses in one or more On-line coop games
Kill 6 Grenade Bosses in one game on Cemetery Free Play without using any grenades during the game
Reach wave 41 on Asylum, staying above the top barricade until wave 21 and above the middle barricade until wave 31
Kill 7 bosses with the Steam Hammer in one game without taking any damage
Reach wave 31 on Asylum without moving below the middle barricade and staying above the top barricade until wave 21
Reach wave 21 on the Asylum map without moving below the top barricade
Have 20 simultaneously active mines on The Field barricade map
On The Field barricade map use the flamethrower to reach a 1000 killstreak without taking any damage
On Cemetery Free Play, use the flamethrower to kill 50 suicide bombers during one game
From the start of a game, kill at least one of each zombie boss type while not dropping your health below 100%
Kill 1000 zombies with a Jack Hammer with only the Messy and the Powerup Hook perks and without taking any damage
In one game collect 250 powerups without using Powerup hook or Snare
In one game use Remote Detonator to blow up 250 Suicide Bombers
Pick Firestarter and Spark and kill 1000 burning zombies in one game with the Steam Hammer
In a Free Play or Barricade game, choose the Friendly Fire perk and use the M107 to kill 50 suicide bombers
Kill 3 Grenade Bosses in one game on Cemetery Free Play without using any grenades during the game
Kill 500 Big Boy zombies on the The Field barricade map in one game
Survive for 30 minutes on the Prison barricade map
Survive for 30 waves on The Farm barricade map
Reach wave 15 on The Farm map without any damage to the scarecrow
On The Farm Barricade, choose only FireStarter and get 5 blaze powerups while protecting the scarecrow from any damage
Survive for 10 minutes in a single Survival game
Survive for the first 5 minutes in Survival mode without taking any damage
Survive for 15 minutes in a Free Play or Barricade game by only picking one perk and one new weapon
Kill 750,000 zombies
Kill 250 burning zombies with an axe in one game
In one game, kill 3 bosses with landmines
In an On-line coop game, play as the Medic and revive team members 15 times in a single game
Without receiving any damage from the start of a game, pick up a nailgun and fire 5000 nails
Reach Wave 50 in an On-Line Barricade game
Reach Wave 40 in an On-Line Barricade game
Reach Wave 30 in an On-Line Barricade game
Kill 7 machine gun bosses in one barricade game within the first 30 waves
Reach Wave 20 in an On-Line Barricade game
Kill 5 butcher bosses in one barricade game within the first 25 waves
Reach Wave 10 in an On-Line Barricade game
Get Friendly Fire, Mano a Mano and Boss Power then kill 5 bosses in one game
Kill 3 grenade bosses in one barricade game within the first 20 waves
Collect 100 Nation Red achievements
Kill 500,000 zombies
In one game, kill 500 zombies with the dynamite powerup
In one game, kill 5000 zombies using any type of explosion
Pick up Friendly Fire and use a Zombie Bomber's explosion to kill two more nearby bombers
Reach a stats KillStreak of 3000 zombies
Get Shrapnel and Midair Trigger then get 500 kills with the grenade launcher
Kill 25 Bombers with a Steam Hammer in one game while staying outside their explosion range
Fire 10000 bullets in Free Play, Barricade or Survival mode while not receiving any zombie damage
Kill 250000 zombies
Set fire to 50 zombies that are being attracted by a Rammer in a single game
Decapitate 100 Big Boy zombies in a single game
Survive 5 minutes with health staying below 25%
Bring yourself back to full health after nearly dying with Last Breath
Pick up 10 health power-ups in one game when your health is at 100%
Collect all ghost perks and kill 1000 zombies during ghosts powerups
Kill 10 minigun bosses in one game
Get 10 zombies sucked into one Meat Grinder
Get Shrapnel and Remote Detonator then use 10 grenades in one game
Kill each boss type twice in one game
Kill 3 bosses in 30 seconds
Kill 100 zombies stunned by flashbangs in one game
While cloaked, kill 250 zombies in one game
Complete the Walker mission on any silver or gold star level
Kill 1000 zombies in a single Survival game
Pick only four perks: Fire Starter, Friendly Fire, Remote Detonator and Molotov, and detonate 12 molotov grenades
Perform 20 remote grenade detonations
Get Stronghold, Regeneration, Armor, Counterblow, Aftershock then survive 10 minutes
Pick up health then survive 25 seconds in Free Play without damage or firing a single shot
Set 250 zombies on fire with the incendary rounds in a single game
Accumulate 90 seconds of Bullet Time in one single player game
Pick up 250 powerups or items in one game
In a single FreePlay game, survive for 5 minutes without your stats accuracy dropping below 50%
In one game kill 2 bosses using the Dual Glocks
Run a marathon length 26 miles/42 kms
Kill 10,000 zombies
Kill 100,000 zombies
In one game, kill two bosses without killing any other zombie in between
From the start of a game, survive for 15 minutes without holding or picking up any grenades
Survive for 15 minutes on the Prison barricade map
Take 2500 zombies down with you using the Vengeance perk
In one game, kick a zombie after that same zombie hurt you and repeat 20x
In one game dive jump through 10 Zombie Bombers causing them to detonate themselves
Collect a total of 50 achievements
Explode 3 propane gas tanks within a 10-second period
Get hurt by and survive 10 Zombie Bomber explosions in one game
In an On-line coop game, play as the Gunner and detonate 50 explosives (grenades, dynamite) in a single game
Kill over 5000 zombies in one game
Kill 250 zombies with the rage powerup in one game
Survive for 15 waves on The Farm barricade map
Reach a stats KillStreak of 2000 zombies
In an On-line coop game, play as the Scout and detonate 5 flash bangs in a single game
Reach a stats KillStreak of 1000 zombies
In Free Play or Survival, kill 100 zombies within the first 30 seconds of the game
Get the minigun and kill 50 zombies with it inside 9 seconds
Kill two Minigun zombie bosses within two minutes of each other
Kill 25 zombies while remaining inside one Turbine area
In an On-line coop game, play as the Sniper and deliver the killing blow to 10 bosses using the M107 in a single game
Collect 10 zombie-attracting Rammers in one game
Collect at least 20 perks in a single game
Get ghosts to kill 25 zombies in one streak while killing none yourself
Get Fire Team, Mirror Image and Wild Bunch, then get a ghost pickup
Complete any mission on 3 silver-star level using only the default Glock
Kill 100 zombies in Survival Mode without moving from start of game
Reach Wave 8 in Bridge Barricade mode
Survive 5 waves in Single Player Warehouse Barricade without the lower sentries firing a single shot
Kill 1000 zombies in any single game without ever picking a perk
Kill at least 10 zombies with one grenade
Reach wave 2 in warehouse barricade without any zombie breaching the fence perimeter
Get Dexterity, Intensity, Accuracy, Heavy Ammo, Improved Loadout then get 1000 kills
Survive for 15 attack waves in Barricade Mode
Kill at least 250 zombies using sentry guns
Kill 150 running zombies in a single game
Survive for 10 attack waves in Barricade Mode
Get at least one kill with ten non-melee weapon in one game
Survive for three attack waves in Barricade Mode without moving
Kill 500 zombies with a melee weapon
Burn 800 zombies with the Flame Thrower
Finish off a boss zombie with the crowbar
In an On-line Coop game, kill a boss with a melee weapon
In an On-line Coop game, stay within reaching distance of another player while not taking damage for 30 seconds
Survive for more than 2 minutes in survival mode
Complete all the story missions
Kill 5 female zombies in one streak without killing a single male
Kill all zombie boss types
Kill any boss within 30 seconds of the boss appearing
Kill the minigun zombie boss
Deal the killing blow to a Grenade Zombie with a grenade
Complete the Point Defense mission
Kill 50 zombies within a ten second period
Complete any mission without taking any zombie damage
In an On-line Coop game, upgrade a sentry gun to a weapon station
Host and play an On-line Coop game
In an On-line Coop game, perform three revivals in a single game
In an On-line Coop game, revive another player and make sure they do not receive any damage for 15 seconds afterwards
In an On-line Coop game, perform your first revival
In an On-line Coop game, kill 20 bosses with your team in a single game
In an On-line Coop game, hold out until wave 20 in Barricade mode
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