Obtain a key by completing the third Riddler trial.

Successfully complete the first Riddler trial.

Apprehend the weapons dealer and lock him up in GCPD.

Stop the bank heist on Miagani Island and lock up the master mind in GCPD.

Destroy all of the militia APC's.

Apprehend Scarecrow's senior commander.

Achieve 50 critical shots on light tanks.

Smash 10 militia transport vehicles off the road without using the immobilizer.

Cure the doctor.

Perform 20 fear takedowns.

Use 100 Quick Gadgets while in free flow combat.

Wayne vs Crane.