- Close Encounter
In an On-line Coop game, kill a boss with a melee weapon
- Organizer
Host and play an On-line Coop game
- Machinist
In an On-line Coop game, upgrade a sentry gun to a weapon station
- Molotov Grill
Pick only four perks: Fire Starter, Friendly Fire, Remote Detonator and Molotov, and detonate 12 molotov grenades
- Shock Expert
In an On-line coop game, play as the Scout and detonate 5 flash bangs in a single game
- Accuracy Expert
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
- Resurgency Expert
In an On-line coop game, play as the Medic and revive team members 15 times 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
- Maximum
From the start of a game, kill at least one of each zombie boss type while not dropping your health below 100%
- Running On Empty
From the start of a game, survive for 15 minutes without holding or picking up any grenades
- Boogeyman
Survive for 15 waves on The Farm barricade map
- Boogeymonster
Survive for 30 waves on The Farm barricade map
- Pinpoint
In a single FreePlay game, survive for 5 minutes without your stats accuracy dropping below 50%
- Killstreak One
Reach a stats KillStreak of 1000 zombies
- Killstreak Two
Reach a stats KillStreak of 2000 zombies
- Killstreak Three
Reach a stats KillStreak of 3000 zombies
- Superior
Kill 500,000 zombies
- Extermination
Kill 750,000 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
- Red 101
Collect 100 Nation Red achievements
- Collateral
In a Free Play or Barricade game, choose the Friendly Fire perk and use the M107 to kill 50 suicide bombers
- Wipeout
In Free Play or Survival, kill 100 zombies within the first 30 seconds of the game
- Fifteen Minutes In Jail
Survive for 15 minutes on the Prison barricade map
- Thirty Minutes In Jail
Survive for 30 minutes on the Prison barricade map
- Bucket Of Nails
Without receiving any damage from the start of a game, pick up a nailgun and fire 5000 nails
- Atomic
In one game, kill 5000 zombies using any type of explosion
- Slaughter
Kill 100,000 zombies
- Butchered
Kill 5 butcher bosses in one barricade game within the first 25 waves
- Defused
Kill 3 grenade bosses in one barricade game within the first 20 waves
- Assaulted
Kill 7 machine gun bosses in one barricade game within the first 30 waves
- Keeper
Reach wave 15 on The Farm map without any damage to the scarecrow
- Frontman
Reach wave 21 on the Asylum map without moving below the top barricade
- Sweeper
Reach wave 31 on Asylum without moving below the middle barricade and staying above the top barricade until wave 21
- Defender
Reach wave 41 on Asylum, staying above the top barricade until wave 21 and above the middle barricade until wave 31
- Dont Disturb
Kill 3 Grenade Bosses in one game on Cemetery Free Play without using any grenades during the game
- Rest In Peace
Kill 6 Grenade Bosses in one game on Cemetery Free Play without using any grenades during the game
- Team Trainer
Reach Wave 10 in an On-Line Barricade game
- Team Recruit
Reach Wave 20 in an On-Line Barricade game
- Team Soldier
Reach Wave 30 in an On-Line Barricade game
- Team Elite
Reach Wave 40 in an On-Line Barricade game
- Team Red
Reach Wave 50 in an On-Line Barricade game
- Extinguisher
Pick Firestarter and Spark and kill 1000 burning zombies in one game with the Steam Hammer
- Planting Seeds
Have 20 simultaneously active mines on The Field barricade map
- Big Harvest
Kill 500 Big Boy zombies on the The Field barricade map in one game
- Immolation
On The Field barricade map use the flamethrower to reach a 1000 killstreak without taking any damage
- Vaporized
Kill 7 bosses with the Steam Hammer in one game without taking any damage
- Messy
Kill 1000 zombies with a Jack Hammer with only the Messy and the Powerup Hook perks and without taking any damage
- Boss Eraser
Kill 10 bosses in one or more On-line coop games
- Boss Eliminator
Kill 50 bosses in one or more On-line coop games
- Boss Eradicator
Kill 100 bosses in one or more On-line coop games
- Boss Obliterator
Kill 250 bosses in one or more On-line coop games
- Double Duty
Achievement description available at game update
- Necromancer
Achievement description available at game update
- Hat-trick
Achievement description available at game update
- Dyn-o-mite!
Achievement description available at game update
- Bad Move
Achievement description available at game update
- Afraid of the Dark
Achievement description available at game update
- Popcorn Party
Achievement description available at game update
- Slow Death
Updating
- Go-Getter
Updating
- Ignition
Updating