Wow, definitely a top-3 game in this jam. Couldn't say more, graphics, music, FX, gameplay, theme. Solid 5/5!
I would say that it's even ready for Steam.
The only thing I would change. On the first level there was an arrow pointing to the place where the target minerals are located. And this arrow really helped. However, there was no such arrow on the second level and it made game really hard for me. It would be nice to keep this arrow all the time or make it as a special ability of the hero