Tales of Destiny DC Leon Solo: Dallis [Chaos/No Damage/No Items]

Dallis is the only thing standing between us and Greybum. This was a little challenging, because he has such wide range despite his attacks being on the slower side of things. That and he's by far the heaviest boss in the run so far; meaning, I wasn't able to combo him high in the air (trust me, I've tried).
Leon level 54
Modifications:
Arte sphere mod (6 extra artes)
New Game Plus options:
Chain Combo Extension
Free Movement
Low Gravity
Single Player Mode
Inherit Artes