Thanks for playing! Yeah, as I mentioned in a few of my other comments, I didn't get as much time for balancing during the jam as I wanted, so the first few levels were a bit of a slog. But I've since posted an updated version on my website that increases the white bullet rate, which I think makes it a bit faster paced, and helps to get to some of the more interesting later levels quicker.
https://jasmine.games/#/games/angels-odyssey