After a squad of brave paratroopers is killed in an intergalactic ambush, the only surviving member of the team embarks on a path of retribution and engages in battle against countless waves of bloodthirsty insects. The game has several types of paratroopers to choose from, each of which has its own set of characteristics and abilities. As you progress, you need to collect amber and alien slime in order to buy upgrades and destroy hordes of enemies even more effectively.