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

Kill 50 enemies in a row without dying

Kill 30 enemies with headshots

Kill 10 enemies by aiming while hanging from a ledge

Kill five enemies with a brutal combo

Kill five enemies in a row with headshots

Find one treasure

Arcade - Complete a planet without using boost

Survival - Survive 45 seconds without shooting or using bombs

Arcade - Collect 5 tokens with a single boost

Arcade - Get 10 bombs

Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.

Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.