MASTRO-COD

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

Burgertown Escort Service Rescue 1 survivor in Infection.

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.

I Got This In The Darkest Shore, survive the initial beach rush without using any machine gun turrets.

Just Like Old Times Dispatch the professor with a shot to the groin.

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

Bike Win 5 Festival races using a Bike

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

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

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

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

Alright, Alright Survive until round 10 in Infection.

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

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

Survivor Survive until Round 25 in Outbreak.

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

Tough luck, chum! Complete Ragnarök - Part I on any difficulty.

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

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

PC Load Letter Use the 3D printer 15 times in a single match in Outbreak.

Heavy Ordinance Specialist Destroy 50 Aerial Scorestreaks with Launchers in Multiplayer

Call of the Void Complete Ragnarök - Part II on any 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)

Tumbler Perform an impressive Barrel Roll

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

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

Deadhead Get 150 zombie headshots in a single game. (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! Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)

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

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

Pit Master Discover and fight Hidden Kombatant 3 in Arcade Ladder

No Mo' Modi Get out of jail, but not for free

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

Annihilation Get 100 Elite Zombie Eliminations in Zombies

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

Going Up… In The Darkest Shore, unlock the Ubersprengen.

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

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

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

Dipped in Gold Purchase all Safehouse and Player Upgrades in Campaign

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

Superhero Training Completed training with Gohan and Videl!

Dog Fight Kill a Gargoyle with the Vanguard in Awakening in Regular or Hardcore difficulty.

Mass Exodus Complete the final Ancestor encounter in Regular or Hardcore difficulty.

Cyberized Research all Augments for 10 Items in Zombies

Eggstra Nemesis! Complete the Egg-Stra XP challenge and then activate a generator in the Nemesis DLC package.

Sanguine Serum In Zetsubou No Shima, drink fresh Widow's Wine.

The Architect Successfully build all of the Schematics in Mayday in Regular or Hardcore difficulty.