Another theory about Aunt Emma to toss in to the hat:

Aunt Emma tosses out two different rings of ghosts. The ring bigger ring, is the one that hurts you. The smaller ring that doesn't travel far fom her seems to be a warning that she's about to toss out a large ring. So, you can run up to attack her until you see the little ring. Once you see the little ring, run like heck until you are against a wall. Repeat.

Known and tested:

For Count Vlod, it's possible to draw out his four accompanying mages without drawing his attention (similar to how Bandit Queen used to be able to be drawn out). It is highly advised that you do so before going in against Vlod. The magic spot is just inside the entrance to the room.