Sorry  
  
Definitely early 90s. Possibly 95s. It is a lot like the doom style shooter. Very little story. Lots of shoot, aliens poping out of holes and such. Platform is PC.  
  
I think we used a joystick for controls. (Yes it was that old of a game). Keyboard movement joystick to aim.  
  
Im sorry on the lack of details but you asking questions seems to be helping me remember the details.