Hey Hythrain! I watched the youtube playthrough you uploaded today on your channel - it was a blast to watch! The "WTF" and "What is this game" put a smile on my face as a dev.
I apologize for your boomerang disappearing, we are looking into that urgently and putting out a big patch on the demo soon.
I was really happy to see you picking up combos naturally. Even if you mostly relied on the basic LLLLLLL combo, you ended up using half our combos throughout your playthrough! I don't see us fundamentally changing the combo system in this game, but we could make it even more intuitive in a sequel. We know most people will rely on some of the easier combos, and there's nothing wrong with that!
It is more of an action RPG than a bullet hell, which you will see in the full game. I do think the Sorcerer boss fight makes it seem a lot like a full-on bullet hell which is understandable. If you like it, please give us a Wishlist!