Alien Complex

An alien civilization is building an underground complex and is preparing to attack Earthlings. You must thwart her plans and save humanity! Gather the best men and stop them. Shoot the aliens in each room, collect weapons, upgrade your hero to make him stronger and more efficient. Remembering that aliens are ahead of us technologically, but that doesn't mean they're also intellectually ahead of us. Don't be surprised and outsmart the aliens. Show who's boss here!