Gabalus

Mano-A-Mano Defeat Titan henchman without using Batarangs (any play mode)

Lost And Found Uncover the secret of Arkham City

Letting Old Ghosts Die Completed Episode 9.

Four Lords Escape the mine.

Sandstorm We are legion

Seeker Discovered a treasure chest

Parts Collector Acquired a Gadget part

Patron Purchase something from the Duke in the story.

Jellyfishing Complete Squidward's Mission in Jellyfish Fields.

FTFY Fully upgrade your hideout.

Roped In Perform 5 air assassinations from a swinging rope.

Petty Thief Unlock a simple lock with a lockpick.

Gunsmith Equip a gun with a customizable part.

Hide And Seek A deadly game of hide and seek

Wardrobe Malfunction Unlock your first change of clothing.

Curiosity Killed the Cat Completed Episode 10.

Family Matters Rescue Sly's long lost Cooper relative in Episode 1.

Cartographer Visit every location of the game.

Thick Skin Completed Episode 11.

Crack The E Nigma Solve every riddle on the island

Hunter Hunt an animal during the story.

Sharing Is Caring Share each type of discovery with friends once.

World's Greatest Detective Spirit of Amadeus Arkham revealed

IQ Test Solve the first riddle

Ghost Train Fight for survival

Look Out Below Completed Episode 12.

That Sucked! Defeat the mutated Dimitrescu.

Get the Ball Rolling Solve a Labyrinth.

Kids Just Don't Understand Completed Episode 13.

Photographer Use Photo Mode.

Sea Legs Complete all naval contracts.

Strategist Defeat at least three enemies with one attack in the story.

Freefall Don't look down

Sock Getter Find 15 of Patrick's Socks

The Lost Tribe Completed Episode 14.

Exit Stage Right All the world is a stage

Memories of Another World Completed Episode 15.

Are you ready now? Talk to Squidward 10 times as SpongeBob.

Diamond Hard You cleaned out Vangelico to pay back Martin Madrazo.

Children of the Past Completed Episode 16.

Got No Strings Defeat Donna and Angie.

Fading Light Completed Episode 17.

Star Smasher Defeat 100 robots as Patrick

Fish Out of Water Defeat the mutated Moreau.

Sweet Victory Defeat Robo-Sandy in the Poseidome.

Cannon fodder Recruit 500 crew members.

Temporary Measures Place the Giant's Chalice in the ceremony site.

Up Urs! Defeat Uriaș in the stronghold.

Goblin Hunter Defeated 100 goblins

Adreaux On Call Completed Episode 18.