This game looks very good. I just wish that I could do the same thing, but move around. Or maybe have the attacks be timing-based. Or have it be a clicker-style game. I just didn't really feel like I needed to be there in the game. Like this could have easily been an idle game, but instead, I had to hold LMB.
I love the upgrades and the character progression though. keep up the work and you might have something here.