Thank for trying it out and for the feedback!
> Gameplay wise, seems to be missing some default stuff that the touhou games have, like displaying your hitbox when you are in focus mode (holding shift to slow down), and an indicator of the boss position, at the bottom of the screen.
At the moment, I don't plan to having show the player hitbox as well as indicators for positions at all.
> I think the bullet hell, gameplay part is good, and it's just missing a couple of things, that I've pointed out above.
Glad to hear that!
> The main problem in my opinion right now is everything before the gameplay. The menus have too much stuff, and feel all over the place.
This is for having some variety for customisation for the player, though it is quite basic for now.
> Wierd word choices. Why does it says LOAD instead of start? What's up with the LOAD PROFILE thing? It all feels very unintuitive to me. The Catatonia, Revelation etc. is the dificulty choice?
It used to be START / NEXT but at some point I replaced it with LOAD and kept it. The wording might be changed to an extend as you suggested. And yes, these are the difficulty choices.
> You have a good bullet hell game here, but I think the menus need a rework.
Thank you! The menu will undergo some slight improvements, e.g. having more decorations and better visuals for navigation.