Excellent art, audio, and combat design!
As others have mentioned it would be helped a lot with some form of map or compass or other device for helping players navigate the dungeon and feel less dumb if/when they get lost. Even something as simple as some specifically placed blood marks on the wall to help people landmark their location in a couple spots would greatly improve the accessibility of the experience.
I quite liked the enemy designs since they all felt unique and challenging in their own way, but once you got used to the enemy patterns they were very beatable with less tension each time.