Defeat 100 enemies with headshots

Find 50 treasures

Kill five enemies in a row with a brutal combo

Kill 20 enemies melee-attacking from behind

Find 40 treasures

Finish the game in Normal Mode

Defeat 30 enemies with the Desert - 5

Defeat a certain enemy by stabbing it in the heart.

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

Find 30 treasures

Defeat 70 enemies with the FAL

Find 20 treasures

Defeat 50 enemies with hand-to-hand combat