Samurai Spirits: Tenkaichi Kenkakuden

Fight as EX characters:
Successfully complete Arcade mode 48 times with different characters. Then, hold L1 while selecting one of the following characters to unlock their EX version: Mina, Sagargedo, Yoshiro, Yunfei, Spirit 7, or Spirit 8.

Fight as Evil Galford:
Successfully complete arcade mode with six characters.
Louie.

Fight as Evil Nakoruru:
Successfully complete arcade mode with three characters.
Louie.

Fight as Kuroko:
Successfully complete arcade mode with 33 characters including Genjuro, Nicotine, Cham Cham and Sieger then press Start+any button over any character to select him.
Louie.

Fight as Kim Wenchue:
Successfully complete arcade mode with nine characters.
Louie.

Matsuri Spirit:
Successfully complete arcade mode with 24 characters.
Louie.

Gallery and Survival mode:
Successfully complete arcade mode with one character.
Louie.

Animal Spirit:
Successfully complete arcade mode with all animal companions.
Louie.

Unknown Spirit:
Successfully complete arcade mode with all Boss characters.
Louie.

Chample (animal companion):
Successfully complete arcade mode with Mina.

Pak Pak (animal companion):
Successfully complete arcade mode with Cham Cham and Tam Tam.

Poppy (animal companion):
Successfully complete arcade mode with Galford.

Shikuru Mamahaha (animal companion):
Successfully complete arcade mode with Nakoruru and Rera.