Pretty good concept, although I was kinda confused about it in the beginning.
Some notes:
1. The boss hp bar below (I assume) was hard to tell. At first I thought it was a timer or boost gauge. Maybe put a name above it, like dark souls?
2. Dice numbers are hard to see, maybe give each number a colour?
3. Boss attacks are hard to discern, maybe because I keep looking down on the floor.
I had much fun trying to beat the game, although my favorite part was the tutorial! =D