You implemented some very impressive systems! I really like the tooltips and the scene where you upgrade your dice :)! I think what could really help the game be more fun would be to put some interesting decisions into the fights, as they are very uninteractive at the moment. Another tip would be to create some synergies between the abilities on a particular side of dice, so that the choice of where you add a symbol is meaningful – right now, it barely matters where you put it (from a mathematical point of view).
Congrats on making the game and best of luck if you decide to continue working on it :)!