This is a really neat concept, and I think with a lot of polish, more content, and more varied dice (and options to use those dice), this could be a really fun game.
I did find it frustrating that the attack dice only has three sides that do an action. And the one enemy didn't seem to be able to do anything? This resulted in seven or eight turns of neither of us actually committing an action because I kept rolling nothing. I think that's something you should design against, if you choose to expand on this.
But yeah. Great concept!