Megara's spell tracking
So this might be intended I'm not sure, but if you have a decoy that pops up when you use your veil, her spells ignore the decoy and only track you, ones that were already cast, or ones she is currently aiming. I use double chaos veil and she ignores both to track me, even if I don't attack to break the stealth. Also her blood orbs spawn in an area you can not get to when she's at half hp and that really just feels like artificial difficulty, not something skill, gear, or potions/blood can fix. These were much less noticeable when playing with my clan, non factors even, but as someone who likes to solo every boss Megara posses more challenge than Dracula to me. Probably a skill issue at the end of the day, but figured I'd throw it out there.