Very polished, though I do not understand the dice mechanic or the game essence at all. Is there supposed to be a failure state? Is it a pure score attack with mechanics I am missing? This might be interesting to expand upon.

Some really neat stuff here!

• High skill-ceiling gameplay
  • Not only do you have to not get hit to keep your damage high, but you have to master the art of resetting your dice and attacking at the same time.
  • Your alternative action button has 3 functions that activate differently based on the status of the character. This is a really neat way of adding variety without adding physical complexity.
• The dice-damage mechanic
  • As long as you don't get hit, you're going to defeat enemies a lot faster. This is very engaging and rewards skill.
  • You can reroll the dice to try to recover from a slip-up. I couldn't figure out the exact mechanic behind the dice, whether it was time-based or enemy defeat-based, but the ability to slowly recover some of your lost progress by re-rolling helps people like me who aren't great at platformers.

Some things I would like to see:

• A tutorial, at least on the functions of the dice mechanic and how re-rolls work. 
• Some small story bit. It's not that important or necessary, but it'd help me want to continue to play the game if I knew what was going on---unless you're going with an emergent storytelling thing like the Souls series and I just didn't catch the details.

Overall, very solid. I don't like Metroidvania style platformers, but this had me playing for a while! Great job!