The Battle For Middle-Earth 2 – The Rise Of The Witch-King: Tips And Tactics

Angmanar, if you build 3 towers in some pass, pump them to ice arrows and shove in them 2 squads of archers (the better, the better), then the troops even reach them will not be, except Mumakill, Entov, heroes andother creatures that have 2 and more than thousands of helms.
And also, if you put a ring in the castle, then the evil in the castle you can hire Saruman, and Galadriel.