Làm thế nào tôi có thể đánh bại Vermilion?

I'll be posting some heavy spoilers

the ghouls he summons can only be damaged by fire and dark attacks (anything that deals max hp% damage), so heroes like Merlin are great for keeping them at bay. They all die in a single hit.

the boss itself will do a move where he charges this portal thing. While doing this, all ghouls are invulnerable. Hit the boss with any curr hp% attack to stop him (this includes all forms of curr hp%, like esther and Dash, as well as lightning spells

the boss can not deal lethal damage. So if the ghouls never hit you, you cant die.