There's some juicy colonists' daughters we have to rescue from their virginity.
Ok, this game is trying to set a serious tone here: space marines are sent to investigate why a colony went silent. You get to shoot aliens. Then upgrade. Then shoot more aliens. Good luck.

Help:

• if you haven't read the ingame help, sure as hell you won't read this, but here it goes anyway :p
• standard shooter controls: WASD/arrows to move, left-mouse button to shoot, SPACE to reload or use/activate objects, P to access the PipBoy :p