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

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

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

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

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

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

Creatures of the Earth Capture a hole-digging creature from every region.

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

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

Yo, Adrian! Find something worth punching!

Home Wrecker Use 50 pieces of interactable cover.

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

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

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

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

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

Salute Me Achieve the rank of Lieutenant.

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

Outstanding Observer Complete many requests for the Lynian Researcher.

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.

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

Undiscovered Truths Find all the intel hidden in Nightfall.

Monster Master Maximize the research level for almost all large monsters.

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

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

Spiritually Attuned Make 100 Psychic Links (Share or Steal)

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

Gotta Catch'em All Collect all secrets.

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

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

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

Robin Revenge Obtain 78 medals on the original Arkham City and Robin Bundle Pack ranked maps (as Robin)

Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)

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

Footy Foul Kill 2 enemies with 1 Slide Kick during Slow-Mo

A Bridge To Somewhere Extend the bridge in Awakening in Regular or Hardcore difficulty.

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

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

Wander and the Forbidden Clear the game in hard difficulty

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

Deadhead Get 150 zombie headshots in a single game. (Map Pack 2 only)

Red Faction: Armageddon Master Unlock all Trophies in Red Faction: Armageddon

Endangered Lizards Killed all shining lizards

To Jugger or to Jugger-Naut Kill all juggernauts after they land on Veteran difficulty in the "Vertigo" Special Ops mission.

Climber Reached top of the shrine

Escaped Awakening Escape Awakening for the first time in Regular or Hardcore difficulty.

State-of-the-Art. Bang, Bang! Kill 10 enemies in a row with Sniper Rifle headshots

It's a Trap! Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)

Egg-stra Awakening! Complete the Egg-Stra XP challenge and then scan an obelisk in the Invasion DLC package.