Well... A learning nightmare, is what this was. I will say though, this is 100% a VERY good level in terms of learning how platformer slope mechanics work. Was it fun you might ask? Not really. I enjoyed aspects of the learning process, and definitely enjoyed fluking some of the checkpoints, but overall I think this sort of gameplay is NOT "fun". To talk about some nitty-gritty details about the level, I went into it expecting checkpoint 3 to be the second hardest and checkpoint 4 to be the hardest. I ended up fluking checkpoint 3, and discovering a way to do the beginning section of checkpoint 4 that makes it much more consistent. By the time everything was said and done, I feel like checkpoint 5 was certainly the hardest checkpoint, and checkpoints 3,4,6 are similar, though 3 looked easier due to me fluking the entire second "half" of it.
~6 hours to complete this (practice included), making it in my opinion the current hardest platformer in the game
4.5/10 for enjoyment
creators watch out, don't block areas off using slopes, if a player learns this level they will 100% attempt to bypass whatever barriers using slopes you set up