Plz help me, I have a question. :)

[DGDobrev]

Well, I can confirm that people can pop 3 chests per battle on impossible difficulty with relative ease, even with a full army roster (which usually means you're way too busy hacking at the enemy or ressing your own troops to be thinking about chests). I, for one, am one of those guys. I love popping chests, since the more Ancient Knowledge scrolls you get, the better your game will go.

In addition to that, when a person is bent on doing a no-loss victory, it is absolutely normal to go for tough units. Faeries, Peasants, Dryads, Zombies, and whatever that's under 150 HP will not do well without a strong backbone (spells, paladins, inquisitors, etc.).

As for Elenhel, using Black Dragons only is a really good (and somewhat cheesy, but that's the fun of it) tactic against Elenhel. He can't use geyser on the Black Dragons and since most of his army are mage-based (necros, archmagi, demonologists, druids, and whatnot), the Black dragons will shrug off most of their damage, since it's magic-based (and black dragons have 80% base resistance). So... I can well see how Temjin did it with relative ease.