Kueffi

Do you even Exo? Exo Melee kill 10 zombies in 30 seconds in Outbreak.

Cheapskate Acquire the exo suit without spending any money in Outbreak.

EMPressive... Complete the "Kill Switch" Special Ops mission on Veteran difficulty.

Apex Complete the "Vertigo" Special Ops mission on any difficulty.

The Eagle has Landers In Ascension, escape on all three lunar landers.

Improper Behavior Spraypaint all Zombrex posters

Not on My Watch Rescue all the hostages in the Special Ops mission "Negotiator."

Rush Hour Get a Double Kill with the RC-XD in Multiplayer

Floater Parachute off a Gantry Crane onto the roof of the Harbormaster's Building in 'Precious Cargo'

Has science gone too far? Get a kill using the HT-95 Levkov, XD-1 Accipiter, Rorsch Mk-1, and Schipunov 42

Betrayal Kill an enemy from behind at close range while disguised by the Sleeper Agent

To Know Your Enemy... Get 100 Kills while using Mutant Injections in Zombies

Siege Complete the "Light 'Em Up" Special Ops mission on any difficulty.

Not a Scratch Finish with your tank at full health in the "Iron Clad" Special Ops mission.

Hired Gun Complete 20 Contracts in MWZ

Deforestation Kill 15 Seeder Turrets in one game in Mayday in Regular or Hardcore difficulty.

Never Tell me the Odds Complete Endor on UNLEASHED difficulty.

Fertilizer Man Kill 200 zombies in a single game. (Map Pack 2 only)

Egg-stra XP! Complete the Egg-Stra XP challenge and then destroy a hive in the Onslaught DLC package.

Untouchable Use only one self revive care package in the "Special Delivery" Special Ops mission.

Big Brawler Get 10 consecutive zombie melee kills before Insta-Kill expires. (Map Pack 2 only)

The Boy Who Could Run Complete all Parkour Fever Challenges

Write Off Kill 500 Enemies using an Insured Weapon in MWZ

Frequent Flyer BASE jump and travel more than 150 m with your parachute

dr0n3d Complete the "Arctic Recon" Special Ops mission in under 3:30.

High Roller Complete the "Iron Clad" Special Ops mission on Veteran difficulty.

Perk-a-Holic Have all four perks simultaneously active in a game of Nazi Zombies. (Map Pack 2 only)

Swimming with the Fishes In Voyage of Despair, kill 50 zombies that are underwater in a single game

Skilled Adversary In IX have a Challenge banner with all 9 medallions

Z-Genocider 2: Genocide Harder Kill 53,596 zombies

Go for Gold! In Onslaught, acquire seven gold chalices

Together Till the End Be the last man standing

Pea Shooter Kill a Rhino with only a pistol in Nightfall in Regular or Hardcore difficulty.

GD Parkour Instructor Complete all Parkour Fever Challenges at night

40 Knives! Kill 40 zombies with the bowie knife. (Map Pack 3 only)

Perkaholics Anonymous! Survive until round 20 without buying a single Perk. (Map Pack 3 only)

Seek & Destroy Get 2 Kills with a single remote controlled Throwing Knife from at least 50 meters away in Campaign

Frequent Flyer! Use the teleporter 8 times. (Map Pack 3 only)

Death of Comedy Use every type of novelty weapon on a zombie

Utility Man Complete all Missions intercepted from cellular tower signals

I’ve seen some things… In Kino Der Toten, visit every location the teleporter can take you to.

Moneybags Have 15000 credits in the bank in Outbreak.

Soul Survivor Reach round 15 in Nazi Zombies without getting revived. (Map Pack 2 only)

Skewer the Winged Beast In Under the Radar, have the SAM target itself and the helicopter

Deer in the Headlights Stab five stunned enemies in a row in the "Light 'Em Up" Special Ops mission.

Think She'll Notice? Destroy all of the cars in the mansion garage in 'Oligarch'

Have You Tried Turning it Off and On? Use a Shock Stick to disable an enemy Sentry Gun

Burgle Burgle Burgle Steal 10 kills from a teammate in Outbreak.

Things That Go Ka-Boom Learn how to craft Exploding Arrows

Helo Hat Trick Destroy each objective helicopter in 'Reactor' with a different Armament