I really liked the art style! I also agree with Znart's points on the rest. This is a great start!

Great effort! It's hard to get something going with such a limited time. Certainly no one is going to poop on anyone for submitting anything.

But just some areas for improvement to consider, if you wanted to keep going with it.

I noticed that when in battle, I can click the Attack or Heal buttons many multiple of times. It also seemed that no matter what I did it only did like 1 point of damage or heal unless hitting it multiple times. And when doing that, it seems that it applies also to what the enemies do. It would have been great to have some graphical feedback for the dice roll for attacks or healing. 

Also, it's so very, very tiny. For us olds, it's hard to really see it, and no options to change that.

Good submission, you should feel proud that you were able to get it this far! Great effort, really!