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Iron Mode Complete the game in Iron Mode.

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

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

I Call Shotgun! Drive a vehicle with a Sentry Gun on the back and have it kill 5 enemies

Helpful Stranger Revive a player from a different Squad in MWZ

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday 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)

Undiscovered Truths Find all the intel hidden in Nightfall.

Burgertown Escort Service Rescue 1 survivor in Infection.

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

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

Tag, You're it! Use the Spotter Scope to tag 60 enemies or items in Open Combat Missions

Master of the reliquary Gather all the fingers of Frankenstein

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

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

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

Song of Torukä Na'rìng Secure the song in Torukä Na'rìng.

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

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

Street Fighter Complete all Dragon's Teeth Assignments

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

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

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

Alright, Alright Survive until round 10 in Infection.

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

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

Untouchable Complete SAM'S STORY on Normal or higher difficulty without dying in Batwing encounters.

Survivor Survive until Round 25 in Outbreak.

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

You Can Pet The Dog Pet a Hellhound in MWZ

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

Heavy Ordinance Specialist Destroy 50 Aerial Scorestreaks with Launchers in Multiplayer

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

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

Song of Va'erä Ramunong Secure the song in Va'erä Ramunong.

High Wire Act Kill 10 enemies while using a zipline

Harmonic in the FEBA Score a harmonic from the FEBA.

Annihilation Get 100 Elite Zombie Eliminations in Zombies

The Lich-Queen's Wrath Ally with Voss against the Githyanki God-Queen. Good luck.

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

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

Song of Kxanìa Taw Secure the song in Kxanìa Taw.

The City Awaits Leave Act Two - Baldur's Gate is just over the horizon.

Perkaholic Have 9 perks active at the same time in MWZ

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