Good, it doesn't seem like my 5 TB of raw text data annoyed you (too much). ;-)
-1: Bombs: Do they destroy bullets, enemies or both? In the last two cases what about the bosses? Anyway as up until this point that game has been very skill based, however, I fear that if there will be bombs they'll make the game too easy. To resolve this conflict maybe there could be another shooting mechanic? I have in mind like 5s to charge, shoot a laser which one-hits every enemy and has exactly the same time which you need to go from one side to the other, BUT (probably you made it this way already while changing the screen shake, but in case not) even while shooting the bullets do kill you. Or one may also have a meter for that which requires 5-10s to charge but can be used at any moment, just less amount of time. For the boss battles you're allowed to shoot the whole time but of course you're still required to be underneath it in order to aim at it.
If you decide to keep it the way it is I'd appreciate it if there was a special power up or sth. if one manages to get to the boss by shooting only once. BTW, I'm not sure anyway about the way it's done yet. I'm not shooting if I don't absolutely have to, because otherwise one has to dodge like 3 bullets until the boss battle.
0: Good thing to know, maybe also something that could be told in the tutorial?
1: My point is not that it doesn't look cool, it totally does, although some more contrast would be good, since e.g. on my laptop's screen everything's clear but on my external FHD screen I can barely see the difference. That's where my point of the palette being cool but not "useful". I'd rather like to be able to realize at any moment what's going on than enjoy good graphics. Ppl don't realize gfx while concentrating on the gameplay anyway.
2: Maybe we'll start another topic about how the story should progress and how it affects the game (pls)? To avoid spoilers I'd even delete it for you when everything is clear.
3: Cool!
4: LOL, I actually thought it was an addition, but in the case I've described the afterwards attacks looked just as difficult. I can show you the video, you just have to ask.
What are you planning about the audio part of the game?
Don't be so strict to yourself, your game is already the 2nd best bullet hell I've ever played, with it's hard yet fair patterns.