I like this game so far, but the RNG is so unforgiving and some weapons are really, really bad. For example there is this weapon, "V something" which shoot a weak blue laser at a slow fire rate. The cheap sword, making low damage is annoying, specially because monster will still attack you in your face while you try to cut them down. Also, I once press restart, and in the new game round I get surrounded by monster which destroy me in seconds.
The game is fun when you get a nice weapon, but when the weapon is garbage, then the game is annoying. There are good weapons which I find fun like the black hole spell book and eye ball shooting laser, the "spraycan" I like it too, and the shootgun. I also liked the upgrade system.
I think you should power up those kind of weak weapons or at least make them more interesting, because, the player when they see they begin a round with something awful, they will most likely just restart right away hoping for a better RNG, making those weapons just an annoyance to be avoided.
Anyways, that is my personal perspective on the weapons. The game have a charming artstyle and the controls feel good, I have no complains on that regard. I like how this project is looking and I will see how it will evolve in the future, nice demo.