If you press "r" after crossing the finish line it increases the level count, but replays the level. By playing level 1 48 times and then beating level 49, anyone can get WR. i couldn't find this anywhere, so i'm gonna assume i was the first to find this :)

check the discord, we have found it for about 10 days. I think it should be buried in one of the forums somewhere, either way, it is banned in runs as it is a 49 levels run, not an any%