SeLLaRk

In the Belly of the Beast In Zetsubou No Shima, survive getting consumed.

Unite In Speed Completionist Gain all stars in 'Unite In Speed'.

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

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

Taking Flight In Gorod Krovi, ride a Dragon.

Pacesetter Completionist Gain all stars in 'Pacesetter'.

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.

Chimp on the Barbie In Ascension, kill a space monkey with a fire trap.

Der Meisterbogenschuetze In Der Eisendrache, obtain all of the ancient bows.

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

Velocity Completionist Gain all stars in 'Velocity'.

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

Evolution Completionist Gain all stars in 'Evolution'.

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

Undiscovered Truths Find all the intel hidden in Nightfall.

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

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

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

Torque Completionist Gain all stars in 'Torque'.

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

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.

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

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

The Ultimate Sacrifice In Zetsubou No Shima, retrieve the Skull of Nan Sapwe.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran 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)

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

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

Release the Kraken! Killed 20 enemies during the boat exfil in Rip Current

Mercy Kill 5 enemies while they are on fire in Chapter 3: Fire Sale

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

Professional Reach Driver Level 15

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

AMG Completionist Gain all stars in 'AMG'.

Campaign Wonder Obtain 114 medals on the original Arkham City and Robin Bundle Pack campaigns (as Robin)

Campaign Nightwing Obtain 114 medals on the original Arkham City and Nightwing Bundle Pack campaigns (as Nightwing)

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.

It's a Trap! In Shi No Numa, kill at least one zombie with three different traps in a single round.

Nightfall Completionist Complete all challenges and kill the Breeder in Nightfall in Regular or Hardcore difficulty.

Archivist Find 30 of 61 News Pickups in the Single Player Campaign

Controlled Chaos In Revelations, override all of the Corruption Engines before round 6.

Turnabout is Fair Play Kill 50 Cryptids with the Venom-X weapon in Nightfall in Regular or Hardcore difficulty.

Fake it Make it Score a goal by tricking the keeper with a Fake Shot

Not One Inch In Gorod Krovi, complete a Lockdown Event.

Upping the Ante Kill the Kraken using a Relic in Mayday in Regular or Hardcore difficulty.

Hat Trick Kill 3 aliens with a single shot from the NX-1 Disruptor in Regular or Hardcore difficulty.