Defeat three enemies with one explosion

Defeat five enemies in a row with headshots

Find one treasure

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

Defeat Titan henchman without using Batarangs (any play mode)

Complete a combo of 40 moves (any play mode)

Complete one combat challenge without taking damage

Complete story mode on Normal difficulty

KO all the henchmen celebrating your arrival at the party

Solve every riddle on the island

Defeat the giant Titan Ivy plant

Venture into Killer Croc's lair and come out alive

Solve 70% of riddler challenges