Finish the Game on Hard Without Changing the Difficulty

Finish the Game on Easy Without Changing the Difficulty

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

Find 100 Treasures

Kill 30 Enemies with the Tau Sniper

Kill 30 Enemies with the M9

Kill 50 Enemies by Melee-Attacking from Behind

Play in the Swimming Pool on the Cruise Ship

Find 60 Treasures

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 30 Enemies with the Mk-NDI

Find 40 Treasures

Defeat 20 Enemies by Blind-Firing While in Cover (without aiming)