Kill 30 Enemies with the T-Bolt Sniper

Find 100 Treasures

Kill 30 Enemies with the M9

Defeat 10 Enemies with Thrown-Back Grenades

Find 80 Treasures

Play in the Swimming Pool on the Cruise Ship

Kill 30 Enemies with the Mk-NDI

Kill 20 Enemies with Gunfire While Hanging

Successfully Counter all of a Brute's Damage-Giving Attacks

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

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

Defeat 50 Enemies with Hand-to-Hand Combat