Tower tactics.

Yes, I'll continue with the walkthrough of the map "Darkness Attacks" now. First, I need to defeat the Barbarians, and later I'll go and eliminate the undead. Then I'll write about how a mage, starting "from scratch" on impossible difficulty, developed enough to defeat strong AI opponents.
saef, play more – mastery comes with experience! And read what strong players write: you'll learn a lot of new things!:) Other people's experience has helped me improve my game, although I'm still far from being a master...