That was fun xD
BUT HARD
Anyway:
ARENA 01: Iwasawa Masami
[Hasegawa Kobato]
ARENA 02: Tōwa Erio
[Sakura Kyōko]
ARENA 03:
[Makise Kurisu] Nakagawa Kanon
ARENA 04: Suzutsuki Kanade
[Charlotte Dunois]
ARENA 05:
[Eucliwood Hellscythe] Gasai Yuno
ARENA 06:
[Elucia de Lute Ima] Konoe Subaru
ARENA 07:
[Himeji Mizuki] Kōsaka Kirino
ARENA 08:
[Yui] Mikazuki Yozora
ARENA 09:
[Kirishima Shōko] Kuroi Mato
ARENA 10: Haqua du Lot Herminium
[Aragaki Ayase]
ARENA 11: Shimada Minami
[Akemi Homura]
ARENA 12:
[Irisviel von Einzbern] Kashiwazaki Sena
ARENA 13: Shiomiya Shiori
[Victorique de Blois]
ARENA 14: Gokō Ruri (Kuroneko)
[Honma Meiko]
ARENA 15: Nakamura Yuri
[Fear Kubrick]
ARENA 16:
[Kanzaki H. Aria] Mine Riko
ARENA 17: Haruna
[Yuzuriha Inori]
ARENA 18:
[Tachibana Kanade] Kasugano Sora
ARENA 19:
[Suiseiseki, Sōseiseki] Fate Testarossa, Takamachi Nanoha
ARENA 20: Izumi Konata
[Nagato Yuki]
ARENA 21: Louise Vallière
[Nymph]
ARENA 22:
[Illyasviel von Einzbern] Asahina Mikuru
ARENA 23:
[Ichinose Kotomi] Akiyama Mio
ARENA 24:
[Nakano Azusa] Kotobuki Tsumugi
ARENA 25:
[Hiiragi Kagami] Sanzen'in Nagi
ARENA 26:
[Sakagami Tomoyo] Sengoku Nadeko
ARENA 27: Suzumiya Haruhi
[Holo]
ARENA 28: C.C.
[Katsura Hinagiku]
ARENA 29: Fujibayashi Kyō
[Furukawa Nagisa]
ARENA 30: Shiina Mafuyu
[Aisaka Taiga]
ARENA 31:
[Last Order] Senjōgahara Hitagi
ARENA 32: Ikaros
[Saber]
ARENA 33:
[Misaka Mikoto] Shirai Kuroko
ARENA 34: Tōsaka Rin
[Index L. Prohibitorum]
ARENA 35:
[Hirasawa Yui] Hirasawa Ui
ARENA 36: Konjiki no Yami
[Oshino Shinobu]
ARENA 37:
[Shana] Hecate
ARENA 38:
[Sakakibara Kōichi, Misaki Mei] Miketsukami Sōshi, Shirakiin Ririchiyo