You have won! Your victory has enabled humankind to evacuate Earth and escape the nightmare. Now you are the only human left on the face of the planet. Cannibal Mutations, Carnivorous Aliens, and Evil Spirits are your only neighbors. You sit back and wait for death, content that you have saved your species.
But then, Earth Control beams down a message from space: "Sensors have located the source of the Alien invasion. If you go there, you may be able to block their entry. The Alien base is in the heart of your own home city, not far from the starport." Slowly and painfully you get up from the Fray.