Soul Eater: Battle Resonance Play as Excaliber
Successfully complete Adventure mode. Start another Adventure mode session. After winning 49 battles, go to the cave where Excaliber is located. Battle 50 will now be available. Defeat Excaliber five consecutive times to unlock him.
Play as Free
Successfully complete Arcade mode to unlock Free.
Play as Medusa
Successfully complete Adventure mode with Maka to unlock Medusa.
Play as Ox and Harvar
Successfully complete Arcade mode to unlock Ox and Harvar.
Alternate costumes
Successfully complete Arcade mode. Select the character that completed Arcade mode with L + Circle to use their alternate costume.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original