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

Kill 20 Enemies with Brutal Combo

Find 30 Treasures

Kill 30 Enemies with Mk-NDI Grenades

Kill 20 Enemies with the Wes - 44

Kill 5 Enemies with Brutal Combo

Kill 30 Enemies with the M79

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

Find the Strange Relic

Kill 3 Enemies with 1 Explosion

Find 10 Treasures

Kill 5 Enemies in a Row with Headshots

Seal the keyhole in Halloween Town.