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

Jack Of All Trades Complete all class training sessions.

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

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

Taking Flight In Gorod Krovi, ride a Dragon.

Fantastic Four Obtain a Chicken Dinner in Squads.

Is everyone here? Unlock all characters from the original roster.

Velocity Completionist Gain all stars in 'Velocity'.

Evolution Completionist Gain all stars in 'Evolution'.

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

The New Time-Master Beat all of Nefarious Tropy's times in Time Trial Mode.

… and you shall find Find and unlock 110 Drop Zones in Alps

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

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

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

Biomech Sweeper Complete "Biomech Sweeper" challenge

Gest - Chapter XIII Finish the levels from Chapter XIII in Warrior difficulty

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

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

Torque Completionist Gain all stars in 'Torque'.

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.

Two's Company, Four's a Party Complete any Adventure level with 4 players.

Undiscovered Truths Find all the intel hidden in Nightfall.

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

Burgertown Escort Service Rescue 1 survivor in Infection.

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

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

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

Mountain legend Complete 30 MOUNTAIN STORIES in Alps

Feel the Beat, Y'all! Complete "Feel the Beat, Y'all!" challenge

Can you dig it? Complete "Can you dig it?" challenge

Master of the reliquary Gather all the fingers of Frankenstein

Last Blood At the end of Guns of Stygia, kill all the enemies on the walkways before the explosions do

The River Complete "The River" challenge

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

Nemesis Complete "Nemesis" challenge

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

Let the Dog Out Complete "Let the Dog Out" challenge

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

That Party was Ace Ace every Adventure level in The Journey Home.

First Blood Get the first kill of a match.

Alright, Alright Survive until round 10 in Infection.

Skirmish - Chapter XIV Finish the levels from Chapter XIV in Squire difficulty

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

Survivor Survive until Round 25 in Outbreak.

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

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

Up-Lifting On Monorail Factory, kill all enemies whilst riding the lift

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