I've been playing through BG for the first time, and been enjoying it. Now, though, I've reached the final fight with Sarevok, and am simply being crushed. My party is the canon one: myself (a fighter/cleric dual class), Imoen (dual classed to mage), Jahiera, Kalid, Minsc and Dynaheir. I'm playing in BGT, and am about 10k xp above the 161k cap of TotSC. I've heavily buffed my party, using all the potions which are likely to be of use which I have. However, all the 'tactics' for the fight which are online consist of the cheesy 'pull one member at a time' method, or swamping Sarevok with summons (which is impossible due to the cap introduced, it seems, in TotSC). I haven't managed to get him below 'injured'.
I've been casting Web and Cloudkill on the area where Sarevok is and waiting until they move forwards to attack in response, fireballing the area in the meantime, which has been...somewhat effective, but doesn't have much effect on Sarevok beyond delaying him. I've been emptying wands of fire in Scorcher mode at Sarevok when he reaches my view range, and Jahiera's been using my Wand of the Heavens on him. I've tried various things with my other party members: toe to toe combat (fairly suicidal: he outdamages me, especially if a couple of his party manage to get through the cloudkill web), spreading out and shooting at him, dodging when he came towards me (sounds good, but the limited space and other enemies around made it even worse: he killed my two mages before I'd had a significant effect, and then the rest of his side turned up...), and using summons to buy time (which he killed faster than I could summon them, and meanwhile the I was having fireballs cast on me).
I haven't been using many magic missiles, as I used them up earlier and it hasn't really made sense from an rp perspective to take a nap while chasing after Sarevok, but I can do that if that's what's needed.
Either way, though, I'm going to sleep on the issue and if anyone has any tips for fighting him without using the cheap methods I mentioned at the top, I'd be glad to hear them. Thanks!
EDIT: I've just realised I missed one buffing spell: protection from evil. I don't think that'll give me the win on its own, though.
I think the main issue is that you have only two people in your group that can use bows (Khalid and Minsc). Are they using bows, or did you basically make them tanks?
In general a good tactic is take one down at a time using Arrows of Dispelling and Detonation If these are coming from different corners, it is fairly easy.
If you have a dual cleric/fighter, the strongest weapon your character can use is the Staff +3 that you can buy in Ulgoth's Beard.
If you already dual-classed in BG1, then the hitpoints of your main character are probably only around 70?
The easiest way is to give your characters the boots of speed. Further give him also some Oil of Speed. Also cast protection from fire onto your character.
Take first out all his support character 1:1. Watch out for the doom guards which are spawning on the right side (you might want to keep in on the left side.
Cast Protection of Fire on your character. Shoot with Khalid or Mins either Arrows of Detonation or Piercing at Sarevok. Have Dynaheir use a wand of fire, same with Imoen. Jaheira doesn't really have too much she can contribute, maybe give her a sling. Your character I then guess will give him the final blow at the end.