Survive the nightmare of the Scarecrow's fear gas

Solve 10% of riddler challenges

Solve 5% of riddler challenges

Gained the ability to play around the world

Rescue the guards and henchman from the Joker toxin in Decontamination

Complete a combo of 5 moves (any play mode)

Completed "Lair of the Metal Queen"

Completed "Exploited in the Bowels of Hell"

Finish the game in Easy Mode

Defeat 50 enemies with the Micro - 9mm

Find 30 treasures

Defeat 100 enemies with headshots

Defeat 50 enemies with stealth attacks