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

Find 20 treasures

Defeat five enemies in a row with headshots

Defeat 20 enemies with headshots

Defeat three enemies with one explosion

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

Finish the game in Normal Mode

Kill 30 enemies with the Dragon Sniper

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

Kill 50 enemies with the M4

Find 30 treasures

Kill 100 enemies with headshots