You will enjoy a well-developed plotline with alternative variations of accomplishing the mission while playing.Endless darkness, grim long corridors of a military base became the residence if Evil. Thousands of bloodthirsty monsters have filled the bases offices, warehouses and research labs. Your mission is simple: Destroy the monsters by any means necessary. You will have an unlimited amount of explosives, lots of weapons and all kind of equipment. They are Alien! They have to die! You have only one chance and you need to use it!The destiny of all mankind depends on you!