Can´t kill Aec`Letec

I´ve tried so many times and so many strategies to kill Aec´Letec (killing the guards, doing it only with me main character...) but I can´t do it. Does anyone have any suggestions on how kill this awful demon ?
Thanks.

It aint so hard once you know the trick.
listen up :

for this strategy you'll need : detonation arows, firebolts, dispel magic spells and a lot of luck.

first move your wizard out of the way (just anywhere safe), and dont start casting any magic. imediatly start killing the sorceres and the front 2 cult gaurds (they will change in Aec'Letecs when you've finished of the first one !!!). Then start shooting arows of detonation at the 3 Cultist at the rear. Maybe trow in a few firebolts with your wizard (I used necklaces of misiles).
When you see the Demon starting to parylize your wariors,
IMEDIATLY dispel magic, you dont want them parylized in this fight!
When the Demon gets to close, attack him with your melee fighters.
If the cult gaurds in the back arent dead yet, keep shooting, if they are dead use your wizards, thieves and archers to kill the front cultist (be sure to pick other arows, or you wil turn everybody black 'n crispy). keep an eye on the Aec'letec, and dispel if he starts parilyzing again. Keep healing your melee fighters with a druid or cleric, or use potions if you dont have them. BE SURE to kill ALL Cultists before the Demon falls.

Maybe try to backstab the Gaurds, or use potions of mirrored eyes against the Demons death Gaze (I dont know for sure if this works)

Good luck, and may Gorion be with you...

That's the way to do it - if I may say so - but I'd like to add that the potion of mirrored eyes doesn't work. It is really important to cast 'dispel magic' on anyone struck by the doom gaze of the Aec' Letec, as that is the only safe cure against it.

Doom Gaze ??? is that when your warior starts dying (some sort of sperm apears in the left corner of your portrait) and turns into a Ghoul ? This happend to me when I had killed everybody, then sudenly some of my party members exploded and became a ghoul. I was'nt able to raise dead on them anymore.

Yeah, and it's critical you keep a spell caster or anyone who can cast 'dispel magic' at the back and away from Aec' Letec. Once somebody shows the snake symbol, immediately cast 'dispel magic' on them.

Finally I killed him !
I tried the fire strategies but in the last second I forgot a guard and the beast killed some of my party. Then, with large amounts of luck, I entrapped him in a "Otiluke´s resilient sphere" (or something like this), and killed the guards so safe. Anyway, I had to use dispell magic.
Thanks !

Hey, No Problemo.
If you ever have another question, feel free to write me.

Azreall