Descent into Hell by Bob Larkin
Your commander has just informed you that in order to defeat the hordes of Hell, you must descend into hell yourself and confront all those demons. Unfortunately, only one marine can go - the transporter which will send you there is only good for one trip and its one way unless you can find another way out after defeating the enemy. All you have as you enter the chamber that leads down into the bowels of hell is your handgun and a small number of bullets. It is up to you to make use of any equipment left behind by previous marines who have obviously failed or you wouldn't be here. Save your ammo, and your health.
HELL IS WAITING............... FOR YOU!