Defeat 5 Guardians With a Sniper Rifle

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

Compare Statistics with Friends

Play in the Swimming Pool on the Cruise Ship

Kill 100 Enemies with Headshots

Find 60 Treasures

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

Find 40 Treasures

Defeat 20 Enemies with Hand-to-Hand Combat

Kill 20 Enemies with Headshots

Find the Strange Relic

Kill 10 Enemies with Grenades While Hanging