Absolutely gorgeous art style and effects,, and the movement of the particles and enemies felt very smooth which I'm sure took alot of time. The addition of helpers was a nice touch as well. I will say things did tend to feel a bit busy at certain points, and I feel like maybe changing the colors of the particles or adding a symbol or something to differentiate them might make them a bit easier to pick out at a glance to tell when to switch polarity.
Clearly a lot of time and effort was put into this, and it really shows, excellent job!