Pitch Black

Suddenly, The Moster leaps on you tackling you to the ground. He stands up and hits you in the head with a rock, knocking you out. He ties you up and drags you out the door.
Several hours later you wake up untied and in a dark room. From what you can see, bodies are laying everywhere, and you seem to be in an old labratory. YOu stand up and walk around a bit. On the ground you find a Shotgun with two bullets left. What do you do.