You did not answer my question. I assume it's close to (roll * attack) - defense, but that doesn't seem to be all there is to it.
player action feedback is still hard which also makes it tough to follow. e.g. you and the enemy are using the same dice, so it's only a small time frame, where you actually see your roll
i believe you updated the interaction between the fights with door selection, but i could be misremembering. that's a nice addition.
I like your visuals. Gameplay wise it's lacking some unique selling point or a especially refined implementation of existing things. Thus the mid tier rating.
Maybe you have a cool idea to make something more out of the dice roll mechanic?