The second violetta boss fight, this time, the battle is with her and her weapon without kornell. You may directly kill her, there's not the need to kill the weapon, as when you kill her the weapon goes too. Aerial combos are the way to go, as Violetta has a really high defense, Yuki/Ulf + Flash/Shadow Warrior + Berserker helps a lot, it helps in aerial combos too. Criticals with Dahna help to get aerial combos. Don't forget about healing, as her freeshooter attack deals a lot of damage. Runner and WOW! helps too, Astraea Zap, Absolute Zero, and others like this deals a lot of damage too.