Least favorite mini boss/boss fight

As the title states, which are some of the bosses you all dislike fighting. I can’t comment on any of the Nemesis bosses as I haven’t fought any of them yet, so I am going to have to go with Queen Ravna. The crazy amount of adds she spawns makes the fight rather tedious on top of trying to avoid her poison attacks.

I just raise my poison resist via items and a potion so I can facetank her.

Any spawns get killed by AOE. Problem solved.
I haven’t tried Ultimate yet, though, so I assume that this tactic won’t work as well.

Azure Matriarchs, for a new character.

They are always grouped with howler, which heals them.
They have a lighting-based retaliatory damage, which unlike Reflective mini-boses, doesn’t seem to expire. It also does tonne of damage, even with 30% Lightning Resist.
They have a lightning breath which does DOT and direct damage.

Yeah, they can be easily dealt with a ranged character, however sometimes when I come across two of them together, I utter under my breath, “Crate, why do you hate melee characters?”

Well, sharzul is pretty ridiculous. I only facetank him with with an aether cluster up. But then again, he’s supposed to be difficult and my gear kinda sucks.

The other bosses aren’t really a problem. Log is laughable. I don’t have any problems with most nemesis, even fabius is quite doable with some running here and there.

The only one that’s REALLY hard for me is the deaths vigil nemesis. And I completely don’t understand his mechanics. He just spawns like 50 minions wich all get buffed and then there is some kind of weird reflect or life leech going on wich drops me in 3 seconds. I can’t beat him if I don’t single him out.