Complete a Co-Op mission.

Disable two switches within 0.5 seconds of each other

Finish the game in Normal Mode

Defeat 30 enemies with the Arm Micro

Defeat 30 enemies with the M9

Defeat 100 enemies with headshots

Acquire 20000 experience points

Acquire the power of the first Dark Lord

Get the Dark Gauntlet

Defuse all bombs in 3 minutes or less

Clean up the Dry Docks

Find a way into the secret base

Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge