ARENA 01: Yui
[Akiyama Mio] Kashiwazaki Sena Shana Kanzaki H. Aria Nagato Yuki Hasegawa Kobato
ARENA 02: Sakurazaki Setsuna Astarotte Ygvar Index L. Prohibitorum Yoshino Sakura
[Misaka Shiori] Harukaze Chiharu Toshinō Kyōko
ARENA 03: Konoe Konoka Tōjō Koneko Takayama Maria Bernkastel
[Misaka Kaori] Angelina Nanatsu Sewell Funami Yui
ARENA 04: Matō Sakura Kushieda Minori Katagiri Yūhi Shiina Mayuri Kanzaki H. Aria Yui
[Nagato Yuki]
ARENA 05: Konoe Subaru Mikazuki Yozora Yuzuriha Inori Kuroi Mato Sakagami Tomoyo
[Illyasviel von Einzbern] Louise Vallière
ARENA 06: Shinomiya Ayase
[Hanekawa Tsubasa]
ARENA 07: Tomoe Mami
[Kawashima Ami]
ARENA 08: Hotogi Shirayuki
[Yūki Mikan]
ARENA 09:
[Kirigaya Kazuto, Yūki Asuna] Emiya Kiritsugu, Saber
Well that wasn't particularly hard aside from Arena 04 and even then it wasn't because there were a lot of strong contenders but simply because I was unsure whether to vote for Nagato or Sakura.