Complete a combo of 20 moves (any play mode)

Gain access to Administration after it is locked down by the Joker

Complete a combo of 10 moves (any play mode)

Survive the nightmare of the Scarecrow's fear gas

Escape from Intensive Treatment to the island surface

Take down Zsasz in the Patient Pacification Chamber

Defeat five Riot Shield enemies by running over their shield

GTA Online: Complete a Job as a member of a Crew.

Smelt an iron ingot.

Attack and destroy a monster.

Use planks and sticks to make a pickaxe.

Punch a tree until the block of wood pops out.

Complete a COOP mission with a teammate