Kill 20 enemies with a brutal combo

Kill five enemies in a row with a single punch, after softening them up with gunfire

Kill 10 enemies by aiming while hanging from a ledge

Kill 50 enemies with the AK-47

Kill 100 enemies with headshots

Find the Strange Relic

Kill three enemies with one explosion

Kill 50 enemies with the PM - 9mm

Kill 10 enemies with headshots

Kill five enemies in a row with a brutal combo

Kill five enemies in a row with headshots

Collect 25% of the prize bubbles on the story levels