You are a soldier serving at secret science facility located in the Mariner valley on Mars. Suddenly things go terribly wrong, all personal becomes totally insane and all genetic hybrids break free. Survive as long as you can! Destroy as much enemies as you can!

• You are free to use five kinds of weapon: pistol, shotgun, machine gun, flamethrower and grenades
  
• Kill enemies and collect loot
  
• Take perks and level-up your weapons
  
• Take perks and influence your health, position, time speed etc.