Stweebz

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

Real Estate Agent Have all possible town NPCs living in your world.

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

Decked Out Purchase or unlock all relics, equipment, and upgrades.

The Most Famous Hedgehog in the World Have your photos taken in Studiopolis Zone

High Score Score 800,000 points in one game -- with Game Settings set to Hardcore.

Go Figure Plant ShadowChild's figurine.

Flatline Completed Ending Five

Up close and personal Kill 10 enemies using melee

Help Desk Get the Blade lobby desk clerk to help you bypass security.

Loyal Customer Purchased all upgrades in the Motor Forge

Leg frag Kill 10 enemies with mines

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

Extract The Data... Get the data that Pritchard is after from within the Palisade Blade.

Expose The Truth! Decide what to do with the evidence you uncovered.

Blue Lagoon Clean Sweep Complete all Sector Challenges in Blue Lagoon.

Quill Tosser Killed a Tollusk using only Ground Urchins.

Threat Neutralized Get past the security ROMs without taking a scratch

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

Voices From Beyond Unlock all songs in the Mouth of Metal

Kung Fu'd It Win 5 King of Kung Fu Matches

Hunger for Justice Win 5 All You Can Eat Matches

King of Bling Earn ALL of the Clear Gems

Paladin Obtain great power

The High Hat Defeat a boss on Inkwell Isle IV without killing any of its minions

A New Blue Completed Ending Three

Tourist Viewed all vistas

A Just Cause Decide what to do with the Altered Biocell.

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

Clean Sweep Complete the System Rift Jensen Story without killing anyone.

Overachiever Watch the 100% bonus ending

gnilB fo gniK Earn ALL N. Verted Gems

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

Enough Coin to Disappear You survived The Brigmore Witches in low chaos with 10,000 coins

Finger on the pulse Upgrade OSB Pulse Wave

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

Welcome to The War Play and complete your first Ranked Match in standard Deathmatch mode

Blitzkrieg Complete the single player campaign in under 12 hours.

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

Harmonic in the FEBA Score a harmonic from the FEBA.

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

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

Murder He Wrote Find all pieces of evidence behind the Saridakis murder.

Worst Nightmare Master the Worst Nightmare Dark Knight track

Ranger Obtain an A-Rank or Higher on all bosses in Inkwell Isle IV

Iron ROM Play through the game in a single session and never use a load or continue.

Airship Adventurer Complete the Zeppelin of Consequence Adventure.

Acta, Non Verba Find all of the Prayers in the base game.
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Stealing is wrong, kids! Take out 10 Scavengers

Knock Knock Get Slaw to open the security door within the Palisade Blade.