We solved some rooms entirely differently, which now makes me doubt about what the intended solutions even are :p I didn't get to the end though, it's way too long and the puzzles are hard to pull off even if you know what to do; something very unusual for a puzzle level, where figuring the solutions out is the hardest part. Certainly an interesting level, but I doubt I'll beat it.
okay, i might be wrong, but i'm fairly sure the song used in the first few levels of the advanced section is from ultimate i spy for the wii, specifically the machine level in the very center of the level select. would be really funny if i was right
I beat this one with tech i discovered in the expert stages. If you input something the same frame as you pause, then if you're not still holding it when you unpause, p1 won't do anything, but p2 will act like you're still holding that input until you press it again. Even with this, the expert stages are hard as fuck.