Kyborg and Mud

You feel a little queasy and sluggish. You're distracted by the rain that's starting to pour down in thick drops. I stick my tongue out. It's acid rain. We're all dead. As you look around you notice that even you yourself look different. Your clothes, armor and weapons have all transformed into primitive materials like rough stone, animal pelt, raw bone. The only evidence of human life is the fragment of the stone room. A heavy pounding sound in the distance moving its way towards you all from the north.