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

Find the Strange Relic

Kill 20 Enemies with Headshots

Find 1 Treasure

Finish the Game on Easy Without Changing the Difficulty

Find 60 Treasures

Kill 75 Enemies in a Row Without Dying

Kill 20 Enemies by Shooting from the Hip (without aiming)

Kill 50 Enemies with the 92FS - 9mm

Find 40 Treasures

Find 20 Treasures

Kill 100 Enemies with Headshots

Kill 50 Enemies with the AK-47