User blog comment:SummonerShadow81/Becats eX/@comment-26983351-20161124133526

I'm finished it at lvl 18 using Febros with Dark element Sword - lance combi

Managed your item properly:

Shade Stone, Titan Elixir, Mega Cure, Holy Light, Crescent Dew.

Don't use shade and elixir until Boss HP at 60%

For Sphere BB atk+ and BB filler, both must have def up.

Ex: Magical device, armor of seal, sacrilege, etc