Pretty cool, although I'm not great at shoot'em ups. You are due a standing ovation for this tutorial, that's the best I've seen in the jam. Some bullets patterns where really clever and the difficulty ramps up evenly so learning is ok. I would suggest make each enemy ramp up in difficulty the further it's damaged ( like cuphead and others ? ). The music I confess I didn't like, I found it quite repetitive and not much in line with the game, I expect something more rhythmic and hardcore.
A great experience overall, congrats !