Neat concept! It kind of reminds me of that Dungeon Clawer game (that I just heard about this week, but it's been out for a while I think). It's neat to have the mechanics randomized for attaching and defending and all that, and I like that I could choose where to put the new things I earned (though I tried to upgrade the "miss" slot and was sad to find it didn't do anything lol - maybe it could give a chance to reroll or just not allow me to apply the upgrade to it?)
If you keep tinkering with it, it would be nice to have an alternative option to spin the wheel (the only way I figured out how to do it was to use the mouse to push it in a direction). A lot of games in this jam use the mouse like that, and my wrist has gotten so tired - it's something I need to improve in my game, too. I also didn't realize it was a fighting game when I opened it up lol, so some additional text on your main page describing the game (instead of just the credits) would have helped me to understand the concept better when I jumped in.
Really nice job though - lovely color palette and nice overall design!