Defeat Dallis in fort joy, best method

Note: What are you waiting for? Defeat Dallis easily & do not forget to Subscribe. LOL. Creating this strategy too thousands of hours of experience. Uploading was not easy either.

As I have written earlier more players in this area can complicate this battle.
If Fane is knight then Alexander can find him out by using, blinding radiance. His faith aura buffs enemies greatly, they have improved dodging, damage & accuracy.
I did not want to use barrels/bag method.
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Tactic
Lowered Ifan's health to get death wish, which can increase damage up to +99%.
Sebille is helping me from far away where enemies can not notice. Be careful, if Dallis comes after you, she can find Sebille.
Let us just say I got a friend at high vantage point where enemies can not notice.
focus on Dallis first, since she get's turn before you & this leaves you vulnerable to her attacks. Use invisibility to stay hidden from all enemies. Alexander can perform netherswap, Gheists have some incredible range on backslash, magisters can deal ranged damage & it will be over.