The only exception is the achievement for how many cards you have registered in your card dex, which only has a trophy
I'm going slow so I can make a michi binder with my favorite pokemon
The tournament is Swiss Style, which means you play against other people with your record, ie: if you lose in Game 1, you play against someone who also lost in Game 1, and if you lose that too, you would play someone who lost twice in Game 3
Apart from the overall best decks, it's pretty interesting to look back over what decks did well (and poorly) in each category because there are some trends worth noticing
everyone knows it, even WotC (see "Revitalizing 'Magic: The Gathering's' Standard Format")
Holactie the Creator of Light was a Japan-only promo card from a Duel Art Campaign, and one of a small number of official cards drawn by none other than the late mangaka and series mastermind himself, Kazuki Takahashi