Really well scoped for a jam, it's nice to have a complete game. I also liked the juice on rolling the dice and the shop choices were interesting for replayability.
One thing is for the combat I ended up just spamming "roll" and watching the hp bars. An idea to explore could be to show your roll first, or hide one of the dice on each roll, and have an opportunity to bet hp for more coins. Or to highlight which dice won against which other dice maybe just by coloring winning dice green and losing dice red. Reroll as a resource could be interesting as well.
Overall I enjoyed it and thought it fit the theme well!