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)

Execute a chimney jump of at least 2 wall kicks

Deliver 99 headshots (ranked play counts).

On chapter IV, playing as Ray, kill sharpshooters without Thomas' help.

On chapter III, kill 20 armed enemies while riding the stagecoach.

Kill all enemies in a single Cooperative Concentration Mode.

Knock yourself down with your own weapon.

Eliminate a creature.

Collect a Cursed Artifact.

Trap a ghost.