Defeat two Titan Henchmen at once

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

Solve 25% of Riddler challenges

Face your biggest fears and keep your sanity

Gain access to Arkham Mansion after it is locked down by the Joker

Defeat Bane

Collect all the pages in the Sketchbook.

Find and finish all the Billboards.

Paint in all the Free Paint levels.

Scare or delight your Genie with a Lightning strike.

Paint a total of 30 Mushroom Vines.

Watch your Genie fly up with a Balloon.