Solve 25% of riddler challenges

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

Survive the nightmare of the Scarecrow's fear gas

Solve 10% of riddler challenges

Escape from Intensive Treatment to the island surface

Survive the onslaught from the deformed Joker henchman

Take down Zsasz in the Patient Pacification Chamber

Kill 50 enemies with the Micro - 9mm

Kill 30 enemies with the M79

Kill 10 enemies with grenades by aiming while hanging from a ledge

Kill five enemies in a row with a single punch, after softening them up with gunfire

Kill 50 enemies with the Moss - 12

Finish the game in Easy Mode