To do a yellow trophy run do you need a clean save file or do you just need to fulfill the normal requirements for it? (beating the fight and spare routes in one run)

are they going to add a fight% category?

Are you allowed to use the pipis popper and big shot bowtie in runs?

What's the difference between the All Bosses category on the the All Chapters leaderboard and the All Shadow Crystals category on the category extension leaderboard? I cant really see a difference between the two. in All Bosses category, you have to defeat all bosses, including jevil and spamton, and beat the game. In All Shadow Crystals, you need to defeat jevil and spamton and beat the game. But there are no other bosses besides those two and the required bosses. What's the difference between them?