I actually used one of my friend's Lv90 Jeanne d'Arc plus a team composed of Altera, Emiya, Medea, Elizabeth, and Mash, not in that order. The reason I included Medea was to get rid of Cu's multievasion, I ended winning by using all three command spells to increase Jeanne's NP against Gilgamesh, and two Cu Caster's Wicker Man (I killed him literally last, after Nero.)

Pretty difficult, but rewarding, with 16 gold medals and a ton of exp/mystic code exp.