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2-fer Using the EBR-14, kill 2 enemies with 1 bullet 5 times in 'Payload' without sounding the alarm

Elevator Out of Order Reach the roof in 'Highrise' under 45 seconds

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

Gravestone Kill 100 Zombies with a vehicle in a single deployment in MWZ

Channeled Rage Get a rage chain of 10 or greater.

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

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

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

Back in the Field Acquire the Major's keycard in 'Deep Cover' within 90 seconds without being detected

Alright, Alright Survive until round 10 in Infection.

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)

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.

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

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

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

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

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

You Can Pet The Dog Pet a Hellhound in MWZ

Once in a lifetime Score as the Goalkeeper in any match

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

Heavy Ordinance Specialist Destroy 50 Aerial Scorestreaks with Launchers in Multiplayer

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

High Wire Act Kill 10 enemies while using a zipline

Shadow of the Beast II Complete all levels on at least Normal difficulty.

Annihilation Get 100 Elite Zombie Eliminations in Zombies

10 pints? Complete a level on Beast difficulty without resurrecting.

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

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

That's One Way to Do It... Destroy an airborne enemy helicopter with a Mortar Strike

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

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

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

Perkaholic Have 9 perks active at the same time in MWZ

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

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

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

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

Score Monger Complete 30 challenges in one Interval

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

Let it Snow Receive the Extreme Environment Suit (XE Suit)

Blitzkrieg Complete the single player campaign in under 12 hours.

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

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

Drilling for Justice Assemble the cryonucleation tunneller - the cryodrill

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

141 Ready Complete the campaign on Veteran

Dipped in Gold Purchase all Safehouse and Player Upgrades in Campaign

Worst Nightmare Master the Worst Nightmare Dark Knight track