After reading all of your wonderful comments, I realized what was my biggest mistake: communication. Some part of my game aren't clearly explained to the player. I thought that it was obvious that applying VORTEX to your own fireball and then using your shield to receive knockback was the way to go when you were stuck, but now I realize that I didn't explain it at all, making players restart the whole level which can be, and is most of the time, frustrating. I'm writing this comment so in my next Jam, I don't forget to explain what my game is about. Again thank you all for playing and the comments. They mean a lot to me.