Breakfast450

Peek-a-boo! Kick open a door, peek open a door, and throw a grenade while peeking a door.

Royal Treasurer Awarded for opening 200 treasure chests.

Build Your League Recruit your first ally

Tripple Threat Awarded for having 50 trip doors remember you.

Perfect Aim Win a match as Deathstroke without missing a shot (minimum 12 shots)

Theater Enthusiast Buy every sphere at the Luca Theater

Complete a set During a single round kill an Infected, Suicider, Ram, Butcher, Floater, Walker.

It's a trap! Score a combo of 75 or more while fighting up the stairs at the "Front Gates of EEEEEEEVIL!"

Killer Look Complete the Mayor's outfit.
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Serial Skiller Awarded for performing a total of 1000 spells or special skills.

Silver Revenge Obtain 48 medals on the original Arkham City ranked maps (as Batman)

Head Games Rescue Mad Hatter's second hostage.

Globetrotter Awarded for setting foot in all secluded regions.

Gladiator Completed a Coliseum Attack stage

Meet Cypher's Edge Max out the Hit Meter 25 times

Older Than the Trees Kill the Wendigo.

Battler Achieve a 5 hit streak in any Story battle level

Gunpletionist Master all Weapon Mods in a single save slot

Yo, I'm Goku! Complete a quest tutorial.

Master Architect Build three houses

Treetop Trouncer Awarded for battling through a horde of rampaging monsters to save the World Tree.

Death of a Sales Rat Defeat General Rat.

Completionist Completed all missions in Secret Armory

Cleaning time! Suck up all toys using the vacuum cleaner.

EXTRA: Seraphic Cry Evolve the Santa Javelin.

Teacher Destroy Monomon the Teacher

Charlie's Challenge Get a testicle-shot from over 100m away

Gold rush Complete five Gold Challenges

Master Shinobi Assassinate an enemy through a shoji door

Fight Like Hell Do 5000 damage as a Player Demon in BATTLEMODE

Queensberry Rules Perform a 4-hit combo with your bare fists in End of Zoe.

It's Raining Cats and Hotdogs Completed a round using the Mutator.

The End To another world...

Last battle Invincible!

Gladiator The glory was short.

Qi Gong: Mind Receive the highest XP-based shrine reward for the first time.

Beside Yourself Awarded for completing 100 side quests.

A Lady's Blood in the Snow Kill Kuroki at the end of the Museum.

Back to Work Earn access to and enter the Administrative Chamber

Acrobatics Perform a leap of faith from a grappling hook swing

One for the Books Complete the Game Records section of the Gummiphone.

Part III Complete Complete Part III Of The Story

I Had To Put Him Down Kill a Caragath with an Execution.

In Storybook Endings Lock up Mad Hatter in GCPD.

Power of Observation Successfully performed 20 perfect dodges.

Proof of Resolve Defeat Hornet in Kingdom’s Edge

Still In the Game Survive to Round 5

Family Memories Fond and Faded Find all Liddell Memories

Blood Bound Max any Weapon Aspect

Hell-Burbia Completed the larger challenge in the Hell-Burbia coliseum