This demo has a beautiful art style and animations, and the exploration is really fun and I felt I couldn't put it down (at least until I had to go to bed). I personally would have liked for there to be more of that classic Metroidvania style of gameplay going back to previous areas to use your current powers to find new places to upgrade and repeat, but I feel that this game could (and should) do well in the future! Oh, and you should probably add a map system to the game if you plan on making it not so linear. In total what I played I loved, and I wish you good luck in finishing it later!