"The Legend". Problems with the walkthrough.

I've already figured it out through trial and error – the crashes happened with the Alchemists. I'm not sure if it was specifically during their attack or when they were about to throw acid... I always throw acid first, so in that battle, I just didn't use them. Fortunately, in other battles, they behaved normally. By the way, what's the best way to deal with demons? I have a level 22 mage with 10 attack and 12 (I think) defense... I don't remember the intelligence, but it's around 18... Currently, my army consists of 6 Giants, 237 Dwarves (they joined, but they're no longer under my control), 237 Archers, 73 Archmages, and 41 Alchemists... (I've also used Guards, Snakes, and Evil Eyes), but the demons (even if they're slightly weaker) still decimate my army. These dogs deal damage to all sides, the demons summon reinforcements, the Demonesses teleport and convert units:smile22: – when they manage to convert 200 of my Archers or Guards, it's just awful. I don't have any money problems, but I'm tired of having to go back through a bunch of territories after each battle to replenish my troops. Should I leave my current army in the castles and build up a demonic army? I don't want to mix them – I don't have the patience. Or what tactics should I use?