Title pretty much explains it all folks what has got to be the most annoying creature/monster that you have fought.

Me would have to be those goddamn drowners in my opinion these buggers feel like there unbalanced. they can somehow hit like a freight train even when your a higher level than them, dodging feels a bit useless on these guys especially when there in a group and you cant parry there attacks hate the buggers.

I'm not particularly crazy about the golems/elementas/trolls. While they require different prepwork, these battles eventually feel like a routine chore. I very much preferred how golems and trolls were extremely rare in the previous two games. They are just annoyingly boring to fight.

Drowners really make you practice your sperate-enemies-from-each-other-skills. Sometimes they get a bit annoying but as long as you don't rush the fight it is not too hard.
Which enemies I hate are ghosts (I'm not sure about their English name)... the normal ghosts that mostly come in packs... they can teleport and thus I get into real trouble when fighting many of them at the same time as seperation is pretty impossible.

pretty much anything that comes at you mob handed, would have been good if they had something similar to the original Witchers group stance.

THIS.
They are fuckin' horrible. I think english name is "Wraith".
You miss them, they teleport, they fucking hit hard.

I hate them. I need the bomb for them can't find the recipe :(

Rotfiends, because after you kill them, as they are dying they explode and do damage to you unless you lurch the crap out of the way fast.