Solve every riddle on the island

Solve 85% of riddler challenges

Complete story mode on Normal difficulty

KO all the henchmen celebrating your arrival at the party

Defeat the giant Titan Ivy plant

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

Venture into Killer Croc's lair and come out alive

Solve 55% of riddler challenges

Defeat Titan henchman without using Batarangs (any play mode)

Capture and lock up Harley Quinn

Face your biggest fears and keep your sanity

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

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