I understand the submission is more of a prototype (with a very high amount of content, but still); so, as asked, I’ll give you feedback on the idea. The gameplay loop is undoubtedly satisfying and engaging, and the multiple ideas you’re looking to implement have great potential. I would recommend focusing on a few core mechanics to publish a polished MVP for people to playtest and give further feedback. On a side note, I’m a big hater of slippery platform movement, but in this game it makes sense as it felt more like a quirk of the character I chose / had to play than a design choice hindrance. I’d still think of a way to eventually make the movement less slippery, with items, upgrades and such. TL;DR — the idea is solid, with loads of potential. I hope you come back to it after you’re done with your personal project.