Directly from the game box:
You have zero tolerance for the terrorists out there against you. They're in yer face and they ha ve to die. The 1st person perspective gives you no time to prepare - it's kill or be killed. Pick your weapon of destruction from lasers, bazookas, grenades or shotguns, and go kick some aliens. This is a 3-D, adrenaline-pumping, 360-degree total combat experience. You don't just play it, you survive it.