Well I have a good strategy. Your Troll rush to find thier base, and try to pick off a few worker routes ,adn take them for your own. Next have an army of Grunts and a hero of your choice ready, for as soon as something engages your troll/s you will have seen thier capabilities. Your sent your army in, and if you werent too slow you should kill them before tier 3. Tier 2 if they are n00b. Did I mention tier 3, your royally screwed. You got to pull off my plan QUICK. Otherwize you'll be attempting to hold their gargs down with nets, or with cover fire from your trolls. You could always hire a pandarin brew master though... mmm flaming undead. And if they get a lich, try to break your amry off into smaller forces so they dont feel the full force of the Nova. Other undead heroes you should be fine unless it's a high level.. dead thing on a horse, forgot their name, I havent faced one or played as on in a while... And stasis wards and Shaman's with bloodlust dont hurt either, well to your army at least, Mwa ha ah ha ha.