Tactics for Dungeon.

Please don't laugh, but here's what happened: I got Dungeon as my starting faction against 3 AI opponents on the "Queen" difficulty. My hero started with Das, and in the tavern, I found Shakti. In total, I had only 115 trolls, including the ones I bought:( I upgraded them... What should I do next? Specifically, which enemies can I attack, and which should I avoid (there's a group of Orcs and a horde of Gnolls nearby)? How should I divide the trolls into stacks for "field conditions"? Should I take the harpies (4 of them), and do I need the chapel (the one that provides a bonus to Medusas), which is visible on the horizon???:confused:

P.S. I'm just used to relying on archers, but I don't know how to play effectively with level 1 infantry:smile45: ...