Complete all achievements ingame (or at least all of those I can do by myself).
Train different teams for competitive battling, like Mione.
There's way more to do!
Trade shinies: Charmeleonx3, Muk, Krabbyx2, Gyarados, Dunsparcex7, Shucklex2, Pupitar, Loudred, Tepig, Excadrillx2, Braixenx2, Skrelpx2
Unique shinies: 140
Seems it is done.
Sig by Elyssia