Mutant Storm Empire

About

Battle through line after line of the emperor's minion horde, destroying absolutely everything you can! Blast through bunches of robots, crush colonies of aquatic monsters, smash swarms of UFOs, and demolish devastating bosses. It's a continuous adventure through four immense, strikingly vibrant worlds, and you can fight alone or join forces with a friend in two-player cooperative mode.

Source: IGDB