Space aliens descended to the ground and tried to destroy the whole of humanity, using his own terrible virus. I killed a lot of people from among those who were on the surface. Now you need to try to rescue the survivors of people and you make a decision on the establishment of the Army of the survivors. Begin to roam the surface of the earth and engage in the search for survivors. On the way Bounce from monsters rallied against you, ready to devour you on the spot. Shoot them from afar, without letting go to her even a few steps.