Mi2Lethal

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

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

Star struck Get 3 Stars on 10 different Echoes

Guerrilla Tactics Execute at least 25 different Skillshots in one Echo round

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

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

Silence is Golden You completed The Brigmore Witches without alerting anyone

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

Music Lover Collect all harmonica melodies in the SAM'S STORY chapter.

Go for Gold! In Onslaught, acquire seven gold chalices

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

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

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

Distressed Out Got some air.

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

Factory Zero You survived Hei Zhen Zhu and RBS using no Praxis kits, weapons, grenades or mines. Whoa.

Aerial Threat Score a header with a player with the Aerial Threat Speciality

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

Moneybags Have 15000 credits in the bank in Outbreak.

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

A Man of Principle Complete the SAM'S STORY chapter earning the Captain's full trust.

Shadow Vigilante Master the Shadow Vigilante Dark Knight track

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

It's just a scratch Complete THE TWO COLONELS Chapter without using any Medkits on Normal or higher difficulty.

Great Owl Find all the Night Hunters' secret stashes in the SAM'S STORY chapter.

Campaign Kitty Obtain all 108 medals on the original Arkham City campaigns (as Catwoman)

Sub Zero Complete the "Arctic Recon" Special Ops mission on Veteran difficulty.

Throttled Survival Kill the Breeder while using a Relic in Nightfall in Regular or Hardcore difficulty.

Speed Slayer Kill the Breeder in less than 5 minutes in Nightfall in Regular or Hardcore difficulty.

New Superpower Complete all China Rising Assignments

Pack Addict! Upgrade 5 weapons at the Pack A Punch Machine. (Map Pack 3 only)

Survived Mayday Kill the Kraken for the first time in Mayday in Regular or Hardcore difficulty.

Targets Acquired Get past the first gate in Awakening in Regular or Hardcore difficulty.

Discriminating Buyer Use exactly one of each care package in the "Special Delivery" Special Ops mission.

Hoarder Have a total of at least 150,000 points in Echoes Mode's total high score

Postmaster Complete any outpost by activating all of the generators in Regular or Hardcore difficulty.

I've Got This Acquire all upgrades

Iron Mode Complete the game in Iron Mode.

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.

Give Them Something to Believe Complete New Game Plus

He knows what they did last era Found all eight audio notes in the Ancient Labyrinth

Burgertown Escort Service Rescue 1 survivor in Infection.

Acquire Waffle Weapons! Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)

Undiscovered Truths Find all the intel hidden in Nightfall.

I kill dead people Killed 40 ghosts in the Ancient Labyrinth

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

Come On And ... Slam 10 zombies at once in Outbreak.

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.