Concept is preety cool! It took me a quick second to grasp the dice-rolling mechanic but when you get into the flow of the game, it's quite fun.
I found the platforming mechanics quite frustrating though - i often fell just before reaching a platform, and because of the unusual jump mechanic (more of a leap than a vertical jump) i fell into the void quite alot of times.
The dice animation is quite slow too, and it's length added to the frustration of losing a level - it almost felt like a punishment!
This is far from a critique of the game though - it looks really, really nice for a 48hr Game Jam game and has quite alot of content (i heard some people spent 20 - 30 minutes finishing the game, that's a heck of alot for a Game Jam game, great job!)