Hi. It's a nice game you have made here, It feels a bit like the dice forge board game, which I'm super fan of. There are also some problems:
- Way too much text with some giving really obsvious tips; I would recommand the "don't tell, show" tip. For example you don't really need to say you heal the player when the action of healing is mostly self-explanatory. Visual feedbacks are also simpler for that.
- Animations are very slow which break part of the dynamic. On the other hand some obvious actions could be automated, like the dice selection when there is no reroll left.
- There are a few issues with balance. First all actions don't have the same type of benefit: while attac and defense are used within a single fight, gathering gold benefits the whole game so if you can keep a fight for a arbitrary long time you can easily collect huge amounts of gold even having it snowball and grow faster after each fight.
- Also as others have pointed out the multiplicator action is way to strong. On my last run I had two dice covered with x4 so each round was like playing 8 dice of the best action. Each turn of the last battle I was gaining 16 defense and dealing 12 daages to all enemies, litterally destroying them. I think you could balance it with the concept of rarity so you can have strong actions that are rare, or in small quantity. That way your may also have a better interest in placing them in you dice to optimize your actions
- Finally I think the gameplay lack of variety as most actions are counters of others action: defense and heal against attack (in some sense they're like two separate life bars capted at 20), fire against block. I think this is what makes the game so easy because there is no surprise or need to adapt. Once you have your strategy set up you can follow it and the game become brainless
Anyway that was a really pleasant experience. Thanks for the game :)