Great job! I really liked the design of different characters and environments. It's a bit sad that animations for many enemies and attacks were not finished.
The mechanic of balancing basic attacks with special attacks is very interesting, but it means that most of attacks player uses will be basic. Still, I think the orb economy is a great idea and would work well with more characters and greater variety of abilities.
Overall, I'm very happy with the game! Good luck with your future projects!