I killed them first playthrough too. I wasn't as lucky in subsequent playthroughs, but If I did it anyone can. I usually suck so hard in these kind of games I'm quite proud of myself.
What gripes me about all the underdark fights is the depth that they deviated from the monster manuals. Just giving them an thematic attack like a cleave or something ontop of the charge I feel would be fine. But their jump also does aoe *pass test or damage and prone* and they have multiattack.
Right now they got extra:
-more movement
-Multi attack
-Aoe jump (which also crosses insane distances) thst does aoe attack upon landing
-shockwave. Not sure what it is (aoe cleave maybe?) But i saw it a few times.
-charge not requiring 10 feet of movement before they can use it.
My rule of thumb is that as long as it's doable without silly Larian shenanigans, it's fine.
