This was fun. Very reminiscent of old sonic games (to the point I kept forgetting I had a double jump).
I wasn't expecting an actual boss fight, so that was fun. The witch had a nice variety of attacks, but I did find myself just hoping that I was actually doing damage or something, as it wasn't clear.
Speaking of not clear, I could have used some more contrast between the foreground and background, especially in the menus. I stared at the options screen for a while trying to figure out how to get back to the main menu, before realizing there was a back button, and that it was already highlighted.
But it's a full game with a plot and an animated opening and closing cutscene, so well done!