You're Bombhead, a man with a bomb as his head.
You fell into a pit to the Littlecairn Caverns, a place full of creatures that don't like your presence in their homes.
Equiped with your only your sword and legs you try to get out and back to civilization.

Dodge, fight, and kill the creatures in the caverns.
Find better equipment.
And most of all don't die, because when you do your head explodes.