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Undiscovered Truths Find all the intel hidden in Nightfall.

Hot Pants Complete I Now Know Why You Cry

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

Ladies Night Beat an Echo Six Expansion Pack mission with the 3 female characters in your party.

Master of the reliquary Gather all the fingers of Frankenstein

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

Oh Yeah!!! Complete Nothing is as it Seems

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.

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

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

Head Trauma Use every type of melee weapon on a zombie

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)

ARCHIVIST Collect all documents

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.

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

AMG Completionist Gain all stars in 'AMG'.

Views From the Abyss STU: Complete "The Spider's Thread" mode.

Tier One In a group of 4 finish an Operation on Challenge with 5 directives enabled.

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

High Wire Act Kill 10 enemies while using a zipline

Boys Club Beat an Echo Six Expansion Pack mission with the 3 male characters in your party.

Annihilation Get 100 Elite Zombie Eliminations in Zombies

Round the Riverbend Find the Secret in Blood Stream.

Burning Inside Kill another player with Crucible in a Foundry Versus Match

1-Upsmanship Complete Extra Life Mode with 5 Extra Lives in your Inventory (Ancient Gods 1)

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.

It's Rally Time! Join the Horizon Raptors Team

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.

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.

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

Birth of An Abomination Complete Root of All Evil

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

Say Cheese Took a picture using the Musou Snapshot feature of the Gala Mode.

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