Hi, I tried your prototype. The idea with the wheel sounds interesting! I was able to beat all 3 difficulties. The Tail Swipe skill seemed to be quite strong though. I beat all the white opponents by just spamming it. The boss was a bit harder. I kind of stumbled through that fight, just selecting moves that sounded strong. :)
Here are a few issues I had:
I was confused at first, when I tried to select attacks with the mouse (I wasn't able to select a target and attack descriptions were missing). I then realised that I had to use the keyboard. Maybe you could add a small section to your game page and explain the controls.
I didn't really understand what the wheel was doing, although I like the idea! As the main mechanic of the game, it probably should be better explained. Also maybe add a preview to show which wheel state comes next. This might help to plan a bit ahead.
I was a bit overwhelmed by the number of different attack options (weapons, skills, spells, consumables). Maybe you can reduce it a bit. For example concentrate on weapons and spells for the beginning. I also would not give the same skills/weapons to different classes. (I just spammed the one skill with all 3 and beat the medium difficulty in the first round)
Hope the feedback helps a bit. It's always hard to make complex games also beginner friendly.