You are Seargent Samuel "Sam" Doyle, Hawk Company, 17th Light Drop Infantry Regiment, United States Marine Corps, serial number 888-19-7206.

"OK, Seargent, I'm sorry to interrupt your shore leave, but strange things have happened on an asteroid in the Asteroid Belt.Some hours ago we received a distress signal from TechBase 127, the UAC radar station, located in this sector.Not very much of the message was understandable, only this: beings of unknown nature have invaded the base.

Then the transmission ceased abruptly.

Your mission is to investigate the situation. You will be dropped in a nearby gorge. To reach TechBase 127 you'll have to make your way through the abandoned mine shafts.

Be very careful with your ammunition. We don't know how much is left there. Good Luck, Sam.