I dont have a camera on hand so can't post pics of my progress, but here's what I've done so far on that list:
Beat the first blitzball game
Learned all of Tidus' key techs
Obtained all Ultimate weapons (have them maxxed too ^^)
Have all aeons
Have all sigils (Lulu's took 1 whole try, hate the horrific chocochicken controls for Tidus')
Can't beat Penance since I have regular version of the game but working on Nemesis
*I am working on nemesis for the monster arena, and then I will beat the game after doing this. I will also have Kimahri's last blue magic overdrive once I get to nemesis since I completely forgot to learn it from Omega Weapon before I killed him before he got a turn so I only have nemesis left to learn it from =/ I started this playthrough before this was put up on the boards (or maybe I just didnt see the thread till I was a long way into the game) so some of the challenges here I'm not going to bother with like the use only one person or w/e even though I may have attempted them had this not been the case