You have opened the book for the first time.

Complete a game of Supply Raid on Bookstore, Home Town, Suburbs or Bus Depot

Drop in on an old friend

There is only one way in

Save the medical volunteers

Become the Bat

Complete story mode on Easy difficulty

Defeat the giant Titan Ivy plant

Complete a combo of 20 moves (any play mode)

Venture into Killer Croc's lair and come out alive

Solve 55% of Riddler challenges

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

Solve 40% of Riddler challenges