Solve 85% of riddler challenges

Achieve 8 medals on predator challenges

Perform a perfect combo including all of Batman's combat moves (any play mode)

Achieve 8 medals on combat challenges

Complete one combat challenge without taking damage

Complete story mode on Hard difficulty

Complete story mode on Easy difficulty

Defeat the giant Titan Ivy plant

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

Venture into Killer Croc's lair and come out alive

Solve 25% of riddler challenges

Catch a Batarang (any play mode)

Defeat Titan henchman without using Batarangs (any play mode)