Kill 100 Enemies with Headshots

Kill 20 Enemies with Brutal Combo

Kill 50 Enemies with the Micro-9mm

Kill 20 Enemies with the Wes - 44

Find 20 Treasures

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

Kill 50 Enemies with the PM - 9m

Kill 5 Enemies with Brutal Combo

Find 10 Treasures

Cleared Cooling Springs.

Defeat the nine Valkyries

Cleared GPU Jungle.

Got your first artifact!