Beating Melissan was indeed a pretty big achievement.
Immuned to everything but +5 (and up)
Around 200 spell resist
Hits like a truck and always cleaves
Summons pawns eternally
Gotta kill her a handful of time
... She makes Demogorgon look easy.
It doesn't help I never have a Paladin in my group to abuse Carsomir.
That sword is sooooooooooo good... but I don't like Keldran =(