I think it was fun, the concept I have seen before but it was executed differently. I think the game scales up a bit too fast, but that can be cuz of the time limit. I do wish that the sprites had their own space because it was hard to see everything all at once without getting overwhelmed in the beginning. think you handled everything right, but the biggest thought I have is that you should be given the option to invest your points into healing whenever you want, and that to get the new die you have to play riskier and save it up, as in like you can heal mid-fight, but you don't get a new dice if you do it too often, and could be balanced by making it so that if you lower the enemies health past 0 you also get some extra invest points.