Very good game! Innovative concept!
I have some feedback. I found that the game moved slightly too quickly for me to look at all the numbers then react to which one I want to roll for so I ended up just spamming the WASD keys until everything died. If the attack was instead a number squares that lit up in the direction you are rolling based on the number that damaged any dice on those squares the game might have more strategy.
Take my feedback with a grain of salt of course! I enjoyed my time playing it definitely one of the more innovative concepts I've discovered so far in the jam!