Finish the game in Normal Mode

Kill 50 enemies with the M4

Find 35 treasures

Kill five enemies in a row with headshots

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

Kill 20 enemies with the Desert - 5

Find 20 treasures

Kill five enemies in a row with a brutal combo

Find 15 treasures

Kill 50 enemies with the AK-47

Find 10 treasures

Kill 30 enemies with headshots