Ayoo!
I played the demo a little bit, until the first boss, Stella, if I'm not mistaken, that was a super fun fight, although it was quite short. It took me 3 attempts.
Now, on to the things I didn't like, you're probably not going to change them that late into development, but anyway...
It's good that you can change the camera behavior, I immediately changed it to "empty", but I wish it could also stick to the character, it moves very unpredictably at times, which messes with my aim and makes me lose sight of the character. And the color palette makes all the characters blend in with the background.
And I don't like the movement in general, it's also very unpredictable, especially in tight spaces. It's either not doing what I want, or it's doing something else. Like, she sticks to the walls when I don't want her to and starts climbing them, or doesn't jump when I need her to, etc.
All of that feels like my character is living her own life, I barely have any control over her.
And finally, I wanted to bind dash to the side mouse button (people who play fast games use them a lot, don't be afraid to use them too), but it seems like they're just unavailable ._.
In any case, even with all of those things, it's still good stuff. I'll follow the project <3