Find 20 treasures

Make five enemies drop their grenade by shooting them

Throw back a grenade and defeat two enemies at once

Defeat 20 enemies with hand-to-hand combat

Buy 15 combos

Acquire 20000 experience points

Win a round without taking any damage in Arcade Mode (any difficulty level)

Play any training session in Tutorial Mode

Defeat 30 enemies with the RPG - 7

Complete the Gallery.

Complete "The Assault on Fort Mercer".

Finish the game in Easy Mode