Gosh, I absolutely loved this and buddies in VC thought it was pretty great too. I was kinda doing the same with my own game, actually! Where the player and AI both roll, and higher roll wins and deals damage.
Your execution and character design was great. Lost to Tequilla, but I absolutely loved it and I'm giving it another try. I enjoyed risking health for bigger damage!
Overall, extremely great entry, I had a ton of fun.