Defeat an enemy with the last bullet in your handgun clip

Pacify any individual.

Miss a lot of boxes.

Defeat Papu-Papu.

In a single level, spin an enemy into another enemy twice.

Perform 10 combo buddy takedowns

Complete the game in explorer mode

Find a Journal Note

Complete Stage 1: Train Wreck

Stealth take-down 5 enemies

Find a Treasure

Finish the Game on Easy Without Changing the Difficulty

Kill 30 Enemies with the M9