Super impressive design and great game overall!
Considering its playfulness, amazing art, matching music (Boss music slaps!) and clever implementation of a theme — I really don't know how it could be made better in 48 hrs.
All the other feedback I have is only applied to the post-jam updates if you are planning to do any.
1. [Already mentioned in other comments, sry] Bug (or feature) — you can sneak one more jump if you rolled bad on your first dice, when the knight transitions to a "type of action dice" position. It actually rolls both dices, rerolling the first one and rolling the second one for free. First reroll of the second dice will also be free in that case.
2. Game needs a little better explaining of the main controls and mechanics inside the game. As the Z/X controls always visible — it makes me think that they are possible at any moment. Only after a few fights I actually got when I can use Reroll or Confirm and when I can't. Arrow keys were discovered through half of the run. Covering that base can make it enjoyable standalone game.
3. I totally get that overall game balance is random for the theme, but if you are planning to evolve the game after — I think (humbly) that level of random should be decreased a little bit, maybe leaving a Shop outside of random core loop.
As always, take this feedback with a grain of salt, as I played it through only once and my assumptions can obviously be wrong or don't match the direction you chose. All these points don't make a game even a bit worse as a Game Jam entry though. Truly incredible work!