As soon as I got in, I thought the jump felt so weird because of how slow it is, but in combat I love how much variability it gives you. This is a very very promising project and I had a lot of fun losing 15+ times. Is practice mode not in yet? I clicked it first and the regular game seemed the same as practice mode.
As I just stated in another demo's comments, I am terrible at shmups, but these feel much more natural to me because I can control the pace of progression. Dodging these projectiles feels great.
Good amount of difficulty for the type of game it is.
Sound design stands out the utmost, and it's consistent and great throughout.
You have a great thing going here, good luck. If I manage to actually get further, I'll edit this comment.