Achievements:
Combo Enthusiast
Objective: Reach a combo of 20
Combo Expert
Objective: Reach a combo of 40
Holiday Survivor
Objective: Survive up to the 20th wave in Santa's map in any difficulty
Keep'em Coming
Objective: Get over a 1.000.000 points in survival
Combo Master
Objective: Reach a combo of 60
Immortal
Objective: Complete a mission without dying
Space Harrier
Objective: Eliminate 500 zombie astronauts
Harvester
Objective: Complete all farm missions
All By My Self
Objective: While in survival mode get to wave 12 playing alone
Killer Instinct
Objective: Perform a 80 kill combo while in survival mode
My Back Hurts
Objective: Complete a mission without picking up any weapons
BFF
Objective: Complete a multiplayer mission without damaging any allies
Photophobia
Objective: Complete 1 mission without picking up any Ultra Charges
Raccoon City Cop
Objective: Eliminate 1,000 Basic Zombies
Flawless Victory
Objective: Complete a mission with full health
Happy Halloween
Objective: Defeat Jazzy
Nightmare
Objective: Defeat Fred
Gravedigger
Objective: Complete all cemetery missions
Pumpkin Pie
Objective: Defeat Pumpking
Lucky 7
Objective: Kill a Martian Teleporter in survival mode
Dynamic Duo
Objective: While playing with 1 ally get to survival's wave 6 without anyone dying
Team Player
Objective: Complete 10 4-player missions
WTF
Objective: Eliminate 723 zombie chickens, 821 basic zombies and 394 zombie astronauts
Astronaut
Objective: Complete all Mars missions
Pork Pie
Objective: Defeat Fatzi
Recruiter
Objective: Check out the Credits
Duster Maker
Objective: Eliminate 1,000 Zombie Chickens
Cat Reflexes
Objective: Eliminate 1,000 Zombie Evaders
Janitor at Chernobyl
Objective: Eliminate 1,000 Radioactive Zombies
Kingslayer
Objective: Kill the Martian King
Earth's Hero
Objective: Complete all missions
Intimate
Objective: Eliminate 200 zombies with melee attacks
Tri-Force
Objective: While playing with 2 allies get to survival's wave 9 without anyone dying
Shield Breaker
Objective: Eliminate 200 Martian with shields
Ninja Squad
Objective: Get to survival's wave 5 in less than 3 minutes
Ultra Master
Objective: Perform 100 Ultra Attacks
Antidopping
Objective: Kill 200 Strong Martian
Royal Flush
Objective: Complete a mission with each of the characters
Running With Scissors
Objective: Eliminate 1,000 Zombies with bayonets
Fantastic Four
Objective: While playing with 3 allies get to survival's wave 9 without anyone dying
Lazy
Objective: Place 100 turrets
Waste of Ammo
Objective: Reload your extra weapon 1,000 times
Stuntman
Objective: Roll 20 times while on fire
Can't Touch This
Objective: While in survival mode and playing alone: get to wave 3 without having been damaged
Mall Cop
Objective: Eliminate 200 Zombies with market cars
Clay Shooter
Objective: Eliminate 100 Flying-Saucers
KFC
Objective: Burn 1,000 Zombie Chickens
Close Encounters of 4th Kind
Objective: Eliminate 200 Martians with melee attacks
In a Rush
Objective: While in survival mode and playing alone: get to wave 3 in less than 5 minutes
Mars Conqueror
Objective: Kill 50,000 Martians
Daredevil
Objective: Eliminate 1,000 Generals
Highscore Master
Objective: Score 10,000,000 points
Cheery
Objective: Protect 50 cheerleaders
Closed Casket
Objective: Eliminate 1,000 Walking Coffins
Weapon Collector
Objective: Pickup 1,000 weapons
ODD
Objective: Pickup every weapon in the game
Zombieraser
Objective: Eliminate 100,000 zombies
Chaser
Objective: Eliminate 100 Martian Teleporters
Nurse
Objective: Heal 10,000 Health Points