Defeat 250 Enemies with Headshots

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

Kill 50 Enemies with the Dragon Sniper

Kill 50 Enemies by Melee-Attacking from Behind

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

Kill 30 Enemies with the Desert-5

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 20 Enemies with the Pistole

Find 40 Treasures

Kill 50 Enemies with the 92FS-9mm

Kill 30 Enemies with the Wes-44

Kill 30 Enemies with Mk-NDI Grenades