Complete a combo of 5 moves (any play mode)

Take down Zsasz in the Patient Pacification Chamber

Survive the onslaught from the deformed Joker henchman

Rescue the guards and henchman from the Joker toxin in Decontamination

Escape from Intensive Treatment to the island surface

Complete a combo of 10 moves (any play mode)

Solve 5% of Riddler challenges

Save all the doctors in medical

Survive the nightmare of the Scarecrow's fear gas

Defeat Bane

Solve 10% of Riddler challenges

Gain access to Administration after it is locked down by the Joker

Face your biggest fears and keep your sanity

Save Dr. Young from being killed by Victor Zsasz

Capture and lock up Harley Quinn

Complete a combo of 20 moves (any play mode)

Defeat two Titan Henchmen at once

Solve 25% of Riddler challenges

Conquer the effects of the Scarecrow's fear gas

Venture into Killer Croc's lair and come out alive

Ride a Titan henchman and knock down 5 thugs (any play mode)

Defeat the giant Titan Ivy plant

Deliver an explosive knock out blow to the Joker (Easy difficulty)

Deliver an explosive knock out blow to the Joker (Normal difficulty)

Solve 40% of Riddler challenges

String up one henchman and drop him to surprise a second (any play mode)

KO all the henchmen celebrating your arrival at the party

Solve 55% of Riddler challenges

Solve 70% of Riddler challenges

Solve 85% of Riddler challenges

Glide continuously for over 100m

Solve every riddle on the island

Complete a combo of 40 moves (any play mode)

Spirit of Amadeus Arkham revealed

Catch a Batarang (any play mode)

Complete one combat challenge without taking damage

Defeat Titan henchman without using Batarangs (any play mode)

Deliver an explosive knock out blow to the Joker (Hard difficulty)

Achieve 8 medals on predator challenges

Achieve 8 medals on combat challenges

Complete one predator challenge by using only Silent Takedowns and without being detected

Achieve 16 medals on combat challenges

Achieve 16 medals on predator challenges

Achieve 24 medals on predator