thanks for this feedback! definitely good point about the coins they were kind of shoehorned in at the end, but would definitely have a purpose eventually. can i ask which stage you got stuck in out of curiousity? i definitely want to strike a balance where all the puzzles are challenging but not in an unfair way or in an unfinishable way.
The one right after the first lava stage, but I don't think it was badly designed, it's definitely a skill issue from my end :,>
Though maybe a way to make stages easier without nerfing them could be by adding markers, for example add a marker that tells you where to go every once in a while or something (just a sugestion though, I know nothing about 3D level design and I've only played 3D Mario games LOL)
Still a pretty good game, I don't mind the level design I was just kinda bad lol