This was neat! It got straight to the point and was really well structured. Everything worked. I don't think I had any major issues. I noticed with some battles I was taking 0 damage or consistently getting missed when the enemies used just "attack" but that's about it, balance wise. I liked all the different skill options and the items selection. It felt like I got a LOT of gold and was able to just go nuts with items haha.
It was definitely repetitive in parts, made it feel a little slow to get through. I actually really like the way the progress was structured but since it's such a core part of the game I think it needs to feel more ... different. Idk. I actually have a similar issue in my game, as you progress down there's no indication that things have changed and it gets really repetitive. So i mean it when I say I get why it's hard to flesh out things like that with the jam time constraint.
I hope you keep going with it, it looks like you have a lot of plans!