great game - I found myself playing it for quite a bit. Using the shell for all of the different mechanics was quite fun, even if sometimes it felt a bit hard to get the hang of (I spent quite a while on the "wavedash" like mechanic section for example). The use of the theme shell as the core gameplay mechanic really came off quite strong here and was really fun to see, especially with all of the mechanics coming together to help you get up at the starting level, though I couldn't manage to beat the final(?) room. This could be fun as a full blown game!