Originally Posted by
Ichon
There are usually 3 waves of Chaos invasions but if you kill all the main Chaos Lords you can win earlier. Lords once 'killed' are actually wounded for 5 turns so if you can kill all 4 of the Chaos Lords within 5 turns you defeat Chaos invasion or you just have to beat all 3 waves. If you use spies and such and have 2 strong armies with Lightning strike sometimes you can wait in ambush and kill all 4 Lords in 1 turn but either way if you have any alliances or friends expect them to turn against you after you defeat Chaos in the 'Age of Peace' unless you bribe them or make sure you share same enemy in war.