Find 50 Treasures

Kill 50 Enemies with the Micro-9mm

Kill 20 Enemies with the Wes - 44

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

Defeat 250 Enemies with Headshots

Kill 50 Enemies with the Moss - 12

Finish the Game on Easy Without Changing the Difficulty

Find 20 Treasures

Kill 75 Enemies in a Row Without Dying

Kill 30 Enemies with the MP40

Find 10 Treasures

Kill 100 Enemies with Headshots

Kill 50 Enemies with the PM - 9m