Power point Progression
There are two viable Power point routes that will work vs. Gondor:
1. Eye of Sauron > Tainted Land > Industry > Darkness > Balrog
2. Eye of Sauron > Scavenger > Darkness > Balrog
Many people will say going for power point route one is the best. This is because Tainted Land is needed if your opponent lays Elven Wood on you and also allows for faster industry than if you went Eye of Sauron as your first power point. Industry is needed because it gets that boost in economy needed to get a second troll cage up. Going for fast scavenger is not bad, but if the Gondor can micro properly Mordor can't kill many units so it wont give much additional income.