Twisty Passages

You are a spelunker who fell through a rock chimney into a dark cave infested with...aliens! Good thing you brought your headlamp and infinite-ammo grenade launcher, like you always do when exploring caves! You quickly find you are not the first, and the last guy to fall in left charcoal markings to navigate by. Essentially one ten-minute level with boss at the end. End screen shows stats and …