Alien hordes suddenly unleashed the full power of the Earth, people do not have time to come and answer coordinated strike, only a single hero quickly orient and struck a crushing blow. Force, as expected, proved to be unequal, he was taken prisoner and locked in an isolated prison for the insane Medvill. It did not break the hero, he decided to break free and complete destruction of the invaders. Help him to fight against endless waves of aliens. Change weapons, improve its efficiency, and do not let yourself win.