"The Legend". Problems with the walkthrough.

Sell something you don't need: artifacts, spells. Is your trading skill developed? If not, you'll have to run around and visit all the obelisks; then you can get a map of the country in the pyramid, which you can sell for about a hundred thousand. If only a couple of Haas's troops remain, cast invisibility on the remaining ones, and while they are invisible, finish off the ents with spirits and fire arrows. I can't advise on any universal tactic; I always focused on knights with a circular attack.