Good aesthetics and use of the theme, with a strong sense of progression through character unlocking. However there's a few issues which I'd like to touch on:
- I don't quite understand the difference between the classes aside from being another damage dealer.
- I don't quite understand what upgrading my dice characters achieves.
- Some bugs in the code made the boss die in 2 hits, which left me somewhat confused.
- The game lacks an ending, and menu. This is especially important considering the music is quite loud and it would be easy enough to boot the player back to the menu once the game is finshed.
Overall it was a decent game and I had fun with it! Don't let my criticisms give you any less pride for the neat game you made! :D