Wow, I must admit that I was expecting less but that was probably the most fun game I've played so far! I loved the music and especially the sound effects for some reason (in particular when I got more health), though sadly there's no rating for that. One thing I would suggest is adding more decoration to the rooms as at the moment they feel a bit bland, especially when there's no enemies. You could reinforce the theme of neon with that. Maybe also have blood splatters from the enemies and yourself that linger on the ground. Overall, though, really fun and balanced game, good work.