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It seems like the weapons don't do any damage. Hits do seem to be detected (because of this annoying high pitch sound). I tried various weapons, but none of them work. I also don't get any visual feedback when hit or hitting something and weapons don't disappear from the ground when you pick them up (?).

Though the art is nice and I suspect that you spent most of the time on that. Always make sure to have plenty of time to playtest your game, to avoid things like this.