I just thought and ran a really funny category idea: gambling% From a new miitopia file win at rock paper scissors in the arcade as quick as possible timing starts upon selecting confirm on your player mii and ends upon the Win! text appearing upon a success

I think full 100% would be torture similar to all gold flags but also really funny. So it'd be All gold flags, all medals, all collectables, max relationship level w/ all miis and horse, max level w/ every class for every mii and anything else I might've missed