This one sucked so much. Not the level just the lap 3. I only had to change one thing (removing a priest) to sort of sequence break and make two rooms back to back possible with the ghost but the rest is just ruthless perfect timing and platforming. The level takes around 7 minutes to get there so it's kind of tedious with that too. Add on super annoying enemy spawns that make grabbing during Lap 3 super risky and you get a level that took me 4 and a half hours; the new longest time.
Po-Boy Bayou at: https://gamebanana.com/mods/446545
Lap 3+4 for CYOP at: https://gamebanana.com/mods/448158