Complete story mode on Easy difficulty

Solve 70% of riddler challenges

Defeat the giant Titan Ivy plant

Completed "Pilgrimage of Screams"

Completed "Battle for Bladehenge"

Completed "Exploited in the Bowels of Hell"

Ride Titan henchman and knock down 10 thugs (any play mode)

Venture into Killer Croc's lair and come out alive

Solve 40% of riddler challenges

String up one henchman and drop him to surprise a second (any play mode).

Capture and lock up Harley Quinn

Face your biggest fears and keep your sanity