When you reset after completing a level, the counter for how many levels you have cleared goes up. This causes skins for each world to be put out of place, meaning that you could complete world one with the final level skin on. My idea was to complete the Any% run, but the background must always be world one. This would require a lot of resetting at the end of the level though, so possibly a 98 level run would work.

Ok. I'll think about it

I have also just found out that you can reset using the glitch to get to a certain level number, reset the tab and then be instantly transported to that level. Would it be allowed to use that in Any% or should that be included in rules, as it does satisfy the two requirements of starting and getting the crown.

I'll talk with other mods