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

Overkill Obliteration - Kill all enemy snipers with explosives

Spliced Complete the "Wrath of the Machine" raid.

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

What can possibly go wrong? Pigsy's Perfect 10： Complete all chapters.

Hired Gun Complete 20 Contracts in MWZ

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

A Joyful Nurse Revive 1996 players as Support in Multiplayer

It's Nice to Be Wanted Defeat each of Gotham's Most Wanted present during the KELVIN Incident

Clean Exit Successfully extract in Hazard Zone without anyone in the squad having died

Amaranthine's Last Hope Saved the city of Amaranthine ("Dragon Age: Origins - Awakening" expansion)

Element of Surprise Break Supercharged criminals 50 times using Elemental Effect weaknesses

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

Never Tell me the Odds Complete Endor on UNLEASHED difficulty.

Downforce Completionist Gain all stars in 'Downforce'.

I Need A Nap Finish the Single Player game on Insane Difficulty.

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

The Enduring Vigil Acquired all upgrades for Vigil's Keep ("Dragon Age: Origins - Awakening" expansion)

Ultimate Pork Roast Recipe Pigsy's Perfect 10: Use all 4 devices on one enemy.

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

Lamborghini Completionist Gain all stars in 'Lamborghini'.

Quadruplets! Pigsy's Perfect 10: Ally 4 enemies using one single Ally device.

Full Master Earn all Gold Medals available in Mastery Challenge

Now Who's the Idiot? Finish The Artifact

Saving Private Reiner Obliteration - Don't kill any members of the Reiner family

Midnight Completionist Gain all stars in 'Midnight'.

Who's Laughing Now? Go into the final round of a championship in third place or lower, and emerge as overall champion.

Roll Call Win a run with every character in No Return
1/10

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

Walk in the Park Complete the game on hard using hardcore mode

Dream Drifter Get 10,000 points or more in a Sector Mode Drift Trial.

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

Write Off Kill 500 Enemies using an Insured Weapon in MWZ

Modded Complete an encounter with each Mod in No Return
8/26

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

Through the Looking Glass Completed the scrying ritual ("Witch Hunt" downloadable content)

Full Marks Infiltration - Complete all the Challenges

Trine 2 Hard Earn all Trophies in Trine 2

Witch Hunter Completed "Witch Hunt" ("Witch Hunt" downloadable content)

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

Took this thing on a test flight Complete Arcade mode with a custom made ship, at Veteran difficulty level

Horsepower Completionist Gain all stars in 'Horsepower'.

A for effort Attain a Time Trial star rating of 35

Specter Officer Reach max level with one class in the Cooperative campaign.

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

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

One-Make Wonder Win Come from behind to win right at the finish line of a one-make race.

A Nightmare On Kusi Street Purge the Infestation on the Mainland

RPM Completionist Gain all stars in 'RPM'.

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