Defeat 70 enemies with the M4

Defeat 100 enemies with headshots

Defeat 20 enemies with the Pistole

Defeat 50 enemies with hand-to-hand combat

Defeat 20 enemies with headshots

Find one treasure

Complete story mode on Easy difficulty

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

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

Solve 25% of riddler challenges

Defeat two Titan Henchmen at once

Complete a combo of 10 moves (any play mode)