ZeroXVX

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

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

Fly Swatter Destroy 3 Flypods within 5 seconds on any level of Insect Infestation.

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

Heroic Training Completed training with Goku!

Off My Planet Recover the Hyperwave Beacon.

Into the Manse Entered the duke's manse.

Fruits of Labor Go into Training mode 10 times.

Are We There Yet? Boarded the phantom oxcart.

Bloodthirsty Fiend Defeated Skalpel.

A Star is Born Earn a bronze star in Career mode

Unrivaled Warrior Raised an officer's Attack to 900.

10 Items No less Enable a Tower Augmentation Item on 10 Towers.

Donut Mess with a Cop Unlock Officer Dick.

ARCHIVIST Collect all documents

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

Alright, Alright Survive until round 10 in Infection.

Street Fighter Complete all Dragon's Teeth Assignments

Avenged Confronted the culprit behind the Vael family's murder. ("The Exiled Prince" downloadable content)

Memento Gave Sebastian a family heirloom. ("The Exiled Prince" downloadable content)

Artful extraction Absorb your third Boss Stem Cell

Rotten Bones in the Crypt Defeated Yuan Shu.

Headshunter Defeated a hydra or archydra.

Lightning Emissary Reach the end of the game in 5 hours or less.

Chapter 5 Speedrun Complete a Speedrun of Chapter 5 below the target time.

Harpy Joyride Summoned a harpy, grabbed hold, and took flight.

The Last Step The Iron Wayfarer's journey finally ends.

Tragedy of Pell Los Defeated Princess Ilyna.

Happy New Year! Toll a bell 12 times.

Finished, without fear. Finish the game with two Boss Stem Cells active

Extreme Manhunt Complete a Seasonal Manhunt mission on Challenge difficulty or above.

Survivor Survive until Round 25 in Outbreak.

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

New Threads Use a new Title and Icon, and fight in one online match. Right on!

To the Victor Go the Spoils Reclaimed your items from the scavenger who stole them from you.

Area of Expertise Complete any gear challenge category.

Brand Equity Complete any manufacturer challenge category.

Aspirant, Shivering Isles Reached Aspirant Rank in the Court of Madness

Trial of the Sword Overcame the trial of the sword.

Going to the Vet Earn the "Veteran" Challenge Collection.
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Man No More Build a suit of powered armor.

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

Chapter 7 Speedrun Complete a Speedrun of Chapter 7 below the target time.

Gesture Collector Collect all gestures.
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Rising Star Earn a silver star in Career mode

Like a glove… Finish trial #6 with 3 hearts left without picking up a spell.

Mode master Win an online game of every mode in every difficulty at least once.

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

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

Chapter 8 Speedrun Complete a Speedrun of Chapter 8 below the target time.