I just played Agartha. Got into an early war with Abysia, trounced them with the help of PoW's and Troglos/Troglo lords with Black Steel armor/Piercer.
The C'tis attacked.
Then Atlantis.
The Caelum.
I did quite well I'd say, but I would have like to test out some thug builgs instead of hauling around random troops as firebrigades.