Finish the Game on Normal Without Changing the Difficulty

Kill 20 Enemies with the Desert - 5

Kill 50 Enemies with the M4

Kill 20 Enemies by Shooting from the Hip (without aiming)

Defeat 250 Enemies with Headshots

Kill 20 Enemies with Gunfire While Hanging

Find 30 Treasures

Kill 20 Enemies with Brutal Combo

Find 20 Treasures

Kill 30 Enemies with the M79

Kill 100 Enemies with Headshots

Kill an Enemy While Playing as an Alternate Character Costume Other Than Drake

Kill 5 Enemies with Brutal Combo