General rules for online games.

Well, level 10 is the end of the second week (roughly). Where did you get 60 archers by that point? :) If you're constantly trying to "outsmart" the AI, when will you actually level up your hero? :)
Look at Dungeon; all their heroes are "tricksters" - 7 stacks, with 1 magic creature each (and if they're hunters, it's even better), and off they go.