Save the planet from the threat of invaders.

Clear mission - The Beginning of the End

Clear Mission - Advance into Darkness

Clear Mission - Watch for the Fists

Clear Mission - Assault Strategy

Clear Mission - Mocking Laughter

Clear Mission - Underground Invasion

Clear Mission - Star-devouring Snake

Clear mission - Missing Person Search

Clear Mission - Empty Death

Clear Mission - Demonic Mountain

Clear mission - End of the Line

Clear Mission - Breakthrough

Clear Mission - Chilly

Clear Mission - Icicle Tower

Clear Mission - Motherstar