Auto-translated
Regarding which upgrades to take and which heroes to level up, I think that in the "Tribes of the East" expansion, everyone has seen the skill wheel in the fan documents. If you choose a hero that several people like to play with, you lose the super ability of the Elves – Nature's Luck. So, I recommend choosing heroes based on the skill wheel and leveling them up to level 23 on a normal map; it's not that difficult to do. After that, the army's strength will increase exactly twofold, because a lucky hit deals about twice the damage. As for the attacking tactic, there is some truth to it. However, I still prefer to take a defensive approach and use Anwen. Moreover, her Silvan blade is very helpful if you choose the right sworn enemies from the very beginning – the key units of the enemy.