Anyway. I've been trying to kill the Demogorgon over and over and can't do it. When I use fighters to chop him, my record is to get him to "injured" status. If I then go up the stairs and heal, he regenerates really fast so killing him bit by bit is not an option. I got Korgan and Sarevok (Korgan level 33, dual wielding Crom Fayer and Runehammer, Sarevok only 22 but what the heck) and I use hardiness, whirlwinds, criticals, haste... everything, and I still get totally overrun. I can take some hits and deals nice damage but it's really just a matter of time before I get stunned or held and I die. I read in every stinking forum about people who claim having killed him with cloud kills, incindiary cloud, Abi-Dhalzim etc. IT DOESN'T WORK!!!!!!!!! Everyone says that's how they killed him. I don't get it. I've tried it all and all I get is "Demogorgon: Magic Resistance". The spells Lower Resistance, Pierce Magic and Pierce Shield doesn't work (it doesn't lower his resistance at all). Greater Malison doesn't work either. I even tried imprisoning him. Didn't work. What am I gonna do?!
My party: Dragonbice, Wild Mage lvl 28 - Korgan, lvl 33 - Sarevok, lvl 22 - Viconia, lvl 35 - Jan, lvl 18/24.
I got all the cool stuff available to me at this point in the game (I just killed Yaga-Shura).
HELP!