Finish an era with a total of 12 War Markers
This is arguably one of the easiest level 3 Developments to achieve but we will say this: Do some ambassador farming first. Tool up your Giants with enough to generate great resources and then boost a town’s resources astronomically. Force them into war. Then? Let the village kill the others in the world.
When they do, let a nomad settle and let them destroy it again.
With this said, be aware of the village’s greed. Let it grow too high and they will attack the Giants! As such, once your village goes to war, that is your signal to stop fuelling their greed so much. You want to keep them angry at humans, but not at gods.
Then, continue to give them resources slowly. The biggest hurdle with this challenge is keeping a supply of competition. It pays to have a village on the other side of the world that you’re building without an eye to war. Keep the resources totting up and Nomads will come…