Thanks for the feedback everyone! Seems like the common feedback is that the beginning levels are a bit slow, which is fair. I meant to do another balancing pass, but completely ran out of time at the end unfortunately.
I can't submit an update on itch until voting is over, but I did post an updated version on my personal website here:
https://jasmine.games/#/games/angels-odyssey
Basically, I just balanced some of the levels to make the white bullets more common, and made some enemies a little less bullet spongey. And I also fixed a few bugs I noticed, and improved the level select screen a little.