This is a cool idea I'd love to see expanded on. Strong "vibes" and I like the art and lighting. It wasn't very clear to me what damage was doing when I pressed it, but I still pressed it pretty much whenever I could. Something that might help could be an enemy which uses a shield, so you'd need to save your attack for when it's vulnerable. Also wanted to mention I somehow totally skipped past the horde on my first try and only fought the boss ( though on my second playthrough I was able to fight both)