Complete the Prologue in single-player

Kill an enemy while floating in your own anti-gravity grenade.

Use the computer in the Captain's office.

Go 2 minutes without double jumping or wall running in a mission where these abilities are available.

Obtain a key by completing the seventh Riddler trial.

Obtain a key by completing the fifth Riddler trial.

Obtain a key by completing the third Riddler trial.

Successfully complete the first Riddler trial.

Win the war for Gotham.

Survive Scarecrow's ambush.

Win the rumble down under.

Kill 10 zombies