I genuinely enjoyed this game, and I also absolutely had an hearth attack on the first enemy scream.
The only thing I would change is the setting being a bit too dark, expecially when using the flamethrower, making it a bit hard to see. I am only saying this since you are planning on making this a full release and not to be mean for no reason and you should 100% feel free to ignore this if you think it does not fit your intended vision