What's the requirement to do a 100%? Do you need all the costumes? Also what is the best route to do this? I'm thinking about doing a any% then going back to cap kingdom and work my way up from there. Any suggestions are welcome. Thanks!

You can see the rules if you go to the category leaderboard and click "View Rules":

Collect every Mission Moon from every kingdom Collect 999 Moons total Buy every souvenir Buy every costume Buy every hat Capture all 52 enemies Fill out the entire music list (82 songs)

After fulfilling all requirements, go to the Mushroom Kingdom and activate the secret ending at the top of the castle.

Timing begins when selecting "Start" on a new file and ends when you activate the secret ending cutscene at the top of Peach's Castle.

The exclusive First Moon Skip on version 1.0.0 is banned.

Video proof is required for runs that have a time of 17:00:00 or better.

Use of Amiibo, 2P, and Assist Mode is banned.