Tag 25 enemies using the camera (Single Player only).

Piloted Metal Gear REX and screamed at your enemy.

Complete the game on the "Insanity" difficulty level without changing the setting

Took the fight to the enemy's door.

Complete Chapter 4 in story mode

Complete one combat challenge without taking damage

Solve every riddle on the island

You recovered sensitive information from a highly defended federal building.

Complete story mode on Normal difficulty

KO all the henchmen celebrating your arrival at the party

Solve 70% of riddler challenges

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

Conquer the effects of the Scarecrow's fear gas