!! '''The bosses of the four selectable levels are based off the [[FourElementEnsemble four classic Greek elements]] (Earth, Fire, Air, Water)'''
* Desolation Canyon- Fire (Grand Dragon -- a tank that attacks with a flamethrower and incendiary missiles)
* Gold Mine- Water (Giant Crab -- a GiantEnemyCrab, and is thus modeled after a water-based creature)
* Armoured Train- Air (Flash Boy -- a guy on a jetpack, who obviously flies)
* Ammunition Depot- Earth (Geas Crystal -- a snakelike robot which essentially has a giant gemstone over its core)