nevermind, I've managed to do it
![smile_teeth :D](/forums/images/smilies/smile_teeth.gif)
Defensive approach was the key, though I didn't quite think of that (barbarians, wtf). Wait on your position, place goblins between cyclops stacks and shoot as much as you can first. The infernals gated inside castle walls when I didn't rush in, the first turn the daughters slowed succubi so Kujin could make her move before them and use fear my roar on those seducing b!tchez. Then chieftains whipped wyverns to fly inside and poison as much as they could (including succubi, while shooting at them all the time, so eventually when their turn arrived there were only 2 left, who died from poison. No seducing, yay!). Whip daughters after and rush them in front of the gate (not inside, so she can take only one or 2 stacks at a time to attack her, slaughter everything you can before daughters bravely die
![smile :)](/forums/images/smilies/smile9.gif)
They actually did half the work (killed 1300 leaping demons in a retal hit, thinned cerberi, helldogs and horses pretty good, cursed with hexing attack) Keep gated stacks away with with fear my roar and hit approaching units one by one, and that's it. Whew! Btw, I checked Gotai's army after that and his whole army was 1 goblin.
![confused :|](/forums/images/smilies/confused.gif)
The spells casted by the hero were lame (he prolly considered it's not worthy, since might over magic took his spell power down at 6 and the goblins did nothing more than use defile, before helping in the final mop-up). The Zehir battle was fun
![smile_teeth :D](/forums/images/smilies/smile_teeth.gif)
I had only the reinforcements (only 40 of each since I was playing on easy - so my cyclops got killed in one strike
![sad :(](/forums/images/smilies/sad.gif)
), bout 150 chieftains (god bless them, they saved the battle), 80 mages and 70smth Titans (with magic resistance, HP and luck artifact - that luck was damn useful), I was in month 6 or 7, so Biara was pretty loaded: 50 + 50 devils (upg and alternate), 150 + 250 pit lords/spawns, 650 succubus mistresses , 300smth horses + the (instant) gated units (but they can be puppet mastered too!
![smile :)](/forums/images/smilies/smile9.gif)
It was all just Puppet master, whip, puppet master, whip, puppet master, vampirism, whip, puppet master, resurrection, end! I did lose most of my army: only 2 godzillas, the intact stack of vampirized angels, about 10 Titans, a few archmages and 90 chieftains left. My morale and luck helped a lot, I gave Zehir leadership though I never knew until the end that it will be so useful. Plus, almost all the lousy spells that Biara tried to cast on my army got mirrored on her own, so she started shooting instead. The end scene was b0llocks, as usual (I hated that douche Duncan all the time, ew!)