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

Finish the Game on Brutal Without Changing the Difficulty

Kill 30 Enemies with the Tau Sniper

Defeat 30 Enemies in a Row with Your Side Arm

Kill 30 Enemies with the RPG-7

Defeat 10 Enemies with Thrown-Back Grenades

Kill 50 Enemies by Melee-Attacking from Behind

Defeat 50 Enemies in a Row Without Auto-Reloading

Find all Treasures and the Strange Relic

Finish the Game on Hard Without Changing the Difficulty

Finish the Game on Easy Without Changing the Difficulty

Find 100 Treasures

Kill 10 Enemies in a Row, Alternating Hand-to-Hand Combat and Gunfire