Lovely idea, and great execution. I especially enjoyed the fact that each map screen is the face of a die.
I really wish there was more depth to the combat so that it required more strategy. Each encounter really comes down to the luck of the rolls, and so there's not a lot in terms of decision making on the player's end. The only thing I can really think of is the player's choice to heal in the overworld (which in my opinion has a bit too harsh of a punishment).
That all said, this game is very well put together, and I'm impressed with how good you got it to both look and sound within the 50 hours. Nice work!