I'm writing this comment as I play through the game.
First of all, I like story in a games, don't get me wrong, but there's a problem. You don't want to overload a game with a story before player gets attracted. Because first instinct of any player (especially in a jam) is to get to the gameplay as fast as possible. You probably want to create a tutorial level first to explain how mechanics work and then add a story. Second thing, your music is way too epic for a story that is written.
Story: "Bard goes to the tavern and plays a sad song"
Song: "Epic adventure"
Maybe a switch to more calm song would do the trick.
About the tutorial, you shouldn't remove the text before the button is clicked. Sometimes I wanted to read the text twice to understand how the mechanic works, but then it just faded away. Also, I think tutorial should be a bit less "texty" and a bit more "try it out for yourself" kinda thing.
Gameplay:
I don't think that I understand the game fully even though I'm pretty far into it. Up until now I randomly placed cubes and haven't felt any trouble doing that. But now I'm kinda stuck on "Hal Fork". I don't get how the mechanics work and why exactly do I die. And I can't really play a tutorial level one more time now. I'm guessing that every player gets random stats and then you roll random amount of cubes that have random numbers on them. But I still die even when I place like 20 defence and Hal has only like 8 attack...
I like the interface in the game, but its a bit out of place. I think when you do 1v1 battles, enemy health and player's health should be placed somehow opposite to eachother. Maybe since your player's interface is at the bottom-middle, enemy's should be placed at the top-middle.
Presentation:
The art style is freacking amazing. I love it. Really great job on that part. But if you dig into that, I think main character shouldn't be less attractive to look at and less detailed than the enemies. Also there is no visual represantation of the fight whatsoever. You hear some sounds get cool first animation and then everything else happens behind the scenes. So, basically, everything that's happening after you placed your dices is a mistery. Need some feedback for the fight. It would add like 100 points.