I enjoyed the way that you combined the retro arcade aesthetic with a visual scaling mechanic! It made for a very interesting playthrough of the game.
I did find it easy to get blindsided by some of the projectiles, especially without much way to aim around independent of movement. Otherwise, it was generally easy to pick up on where bullets were, proximity-wise.
Also, the idea of fairies getting guns had a good combination of serious and funny that I liked a lot. Well done on this game! ^.^