Big Bang
Deliver an explosive knock out blow to the Joker (Easy difficulty)
Bigger Bang
Deliver an explosive knock out blow to the Joker (Normal difficulty)
Biggest Bang
Deliver an explosive knock out blow to the Joker (Hard difficulty)
Freeflow Perfection
Perform a perfect combo including all of Batman's combat moves (any play mode)
Mano-A-Mano
Defeat Titan henchman without using Batarangs (any play mode)
Born Free
Escape from Intensive Treatment to the island surface
Catch!
Catch a Batarang (any play mode)
Daydreamer
Survive the nightmare of the Scarecrow's fear gas
Invisible Predator
Complete one predator challenge by using only Silent Takedowns and without being detected
Party Pooper
KO all the henchmen celebrating your arrival at the party
Rope-A-Dope-A-Dope
String up one henchman and drop him to surprise a second (any play mode).