Escape from Intensive Treatment to the island surface

Rescue the guards and henchman from the Joker toxin in Decontamination

Complete a combo of 5 moves (any play mode)

Any Hero rides his special mount for the first time.

Any Hero has forged something into an item for the first time.

Any Hero has used a teleporter for the first time.

Get 100 High Fall take downs.

Defeat Alden.

Reach full negative Karma.

Kill 50 enemies by using water.

Take down 25 enemies while riding on the roof of a moving vehicle.

Find 25% of the Shards.