Octane_Lumpy

The Last Laugh The joke's on who?

Diamond Geezertron Unlock the final skill in either skill tree

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

Kill Your Darlings You put your imagination in its place.

Komodone Win against Komodo Joe in the Adventure Mode.

Arena Explorer Complete a Crystal Challenge in the Adventure Mode.

Double Down Played 10 hands of Blackjack.

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

Retreat From Fire Cause the Alien to retreat using a molotov

Strangers' Memories Completed every side mission.

Bone Breaker Kill the Bone Sperm Whale

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

Killer Look Complete the Mayor's outfit.
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Master of Sorcery Learn all sorceries

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

Career Criminal Attain 100% Game Completion.

Skate Pro Travel 50,000 meters on the skateboard.

Master Architect Build three houses

Older Than the Trees Kill the Wendigo.

Head Games Rescue Mad Hatter's second hostage.

The Big Boss Defeat Absalom

A Stroll In The Demonic Park Complete the game on any difficulty setting

Substance Abuser Drink beer while on steroids or vice-versa in SP

Hey, it's-a-me again! Perform a highground attack as a finishing move

Noms Eat 10 pieces of food in SP

Mutually Assured Laura and Travis killed each other

The Masterful Marksman Complete the entire main campaign on Marksman difficulty

Thousands of candles Defeat the Guardian

The pen is mightier than the sidearm Successfully complete Library of Evil

Gunpletionist Master all Weapon Mods in a single save slot

Notorious Red Dead Online: Reach Rank 50.

One Armed Bandit Played 10 spins of Slots.

Bring Down the House Explore Fort Wolcott.

“A Shocking Turn of Events” – Expert The player has rescued the Little Sister in “A Shocking Turn of Events” in under 4:00

A Night in 1849 Visited the past

Every Woman for Herself Finish the game without saving anyone using Jill.

Titan Mastery Fully upgrade a Titan Subclass.

Teacher Destroy Monomon the Teacher

Black Market Burglar Rob a black market shop

Glass Dismissed Break 300 bottles of the shooting gallery.

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

Like a drunk who's lost a bet Kill 20 enemies as they revive

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

Gold rush Complete five Gold Challenges

Wicked Eyes and Wicked Hearts Make an impression on the Orlesian court.

Tasty Enter your lair with a full stomach.

Completionist Completed all missions in Secret Armory

The tools of the profession Find all melee weapons

Not a sole survivor No-one survived!

That's a Man! Completed "My Baby's a Showgirl."