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

Kill 10 Enemies with Grenades While Hanging

Kill 30 Enemies with Mk-NDI Grenades

Kill 50 Enemies with the AK-47

Finish the Game on Crushing Without Changing the Difficulty

Kill 30 Enemies with the RPG-7

Defeat 250 Enemies with Headshots

Kill 50 Enemies with the M32-Hammer

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

Kill 30 Enemies with the Wes-44

Find 20 Treasures

Finish the Game on Hard Without Changing the Difficulty