Nice mix between brain storming puzzles and agility sections, The bridge puzzle was the most difficult and one of my favorite, the last level was extremely long, but I beat it and I felt so much weight lifted from my shoulder.
Things I don't like would be the trapdoor and the pit hitboxes, I only set one toe on it, and it just considered me fell. The pit can just be invisible walls, so any puzzles involve getting close to the ledge would be more convenient. And I think all character's collision can be at the center, because all characters are one block tall anyway.