Defeat 20 enemies with a single punch, after softening them up with gunfire

Finish the game in Hard Mode

Find 80 treasures

Defeat 50 enemies with the Dragon Sniper

Defeat 75 enemies in a row without dying

Defeat 70 enemies with the FAL

Defeat 30 enemies with the Wes - 44

Defeat ten enemies in a row with hand-to-hand combat

Finish the game in Normal Mode

Defeat 50 enemies with the Micro - 9mm

Defeat 20 enemies by shooting from the hip (without aiming with L1)

Defeat 50 enemies with stealth attacks