Kill 50 Enemies by Melee-Attacking from Behind

Kill 50 Enemies with the Micro-9mm

Kill 50 Enemies with the M4

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

Find 20 Treasures

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 100 Enemies with Headshots

Kill 50 Enemies with the FAL

Defeat 20 Enemies with Hand-to-Hand Combat

Explore Photo Mode

Compare Statistics with Friends

Finish the Game on Hard Without Changing the Difficulty