Here is the full list of all 19 Blade Arcus from Shining: Battle Arena achievements.
Complete all achievements
Clear Story Mode with every character
Clear Story Mode with Sonia
Clear Story Mode with Isaac
Clear Story Mode with Melty
Clear Story Mode with Roselinde
Clear Story Mode with Fenrir
Clear Story Mode with Misty
Clear Story Mode with Rick
Clear Story Mode with Altina
Clear Story Mode with Xiaomei
Clear Story Mode with Dylan
Clear Story Mode with Urayukihime
Clear Story Mode with Pairon
Clear Story Mode with Rage
Clear Story Mode with Sakuya
Clear Story Mode with Ryuga
Clear Story Mode with Rouna
Press the start button in the title