Okey-dokey. People ask me about how to use Isis and how to counter her a lot. When you hit the Mythic Age, build lighthouses around all your Town Centers, as they have an amzingly long line of sight. Also, try to build at least 1 monument around each Town Center for god power protection, but be careful; you can only build 5. Get to the Heroic Age quickly and use War Elephants, Chariot Archers, and a few Camels to defeat your foe. The War Elephants are the big daddies of hand to hand combat and have excellent armor and hitpoints, so use them a lot. When you hit the Mythic, also, buy the Ballista Tower upgrade at one of your guard towers. The upgrade superboosts tower attack.