So this is simple in concept and presentation, but it does what it does very well. The one thing I was confused by at the start of the game was why it seemed like my attacks weren't working and I didn't understand why that was, but then I realized that it was because my attack power wasn't high enough (if there were sound effects, a clink to show the ineffectiveness of your attack would be appropriate). Still, it is rather annoying that you have no idea how high your attack power has to be to defeat an enemy -- simplest way I can think to do that might be to have each die be a different color, and that color corresponds to the enemy (though that also risks the confusion that they need to have that color to defeat the enemy, and not just have an attack power higher than it).
Also, it's weird seeing a grid based game like this that's not really grid-based. It's very easy to become QPU-misaligned. Luckily you can correct it by walking into a wall, but sometimes it can be confusing as to what attacks will hit you or where you'll attack because of this.
But like I said earlier, besides those few things, I think it's executed quite well. I'm always impressed when these jam games have a boss; I really like the way this one was implemented too (in this case the fact that the boss knocks you back clearly shows you're damaging it).
