Pretty cool! I love the visual style of this. I had a little trouble telling when I'm moving - seems the floor changes even if I strafe into a wall (when kept doing as I thought I was pressing the "turn" key), which gets confusing ^_^. Items often appeared closer than they were, I thought I should be able to pick them up, but had to walk a step forward.
I maybe made it near the end? I got attacked from behind by the purplely-tentacley guy, and by the time I turned around I had no HP left, so game over ^_^.
Great atmosphere and art, well done!