Played it to turn 190. Eliminated Cassiel. Pictures a bit later.
Turn 164. The Doviello people can' help but to admire the militiary might of that Grigori fellow, known as Needles, even through they despise the fact that he seems stronger when he's on the defensive. So they don't dare to attack Junon, and are spreading out to pillage the surrounding countryside.
Also, Charadon decides that the famous Lucian would be more useful attacking the enemies' cities, not exploring the wilderness.
Turn 166. The Doviello are in the Grigori's fat crozz, pillagin' their foodz.
Apparently, that Needles guy couldn't stand to see the destruction of the rice fields next to Junon, so he ferociously attacken the Doviello beastmen. He managed to kill a unit of them, but he was so weakened after it, that another unit of Beastmen easily killed him.
Turn 170. We discover Animal Husbandry, research set to Bronze Working.
Turn 171. Persuaded by the more moderate elements of the Doviello society leaded by Mahala, Charadon agrees to start setting up an elder council in Urslo.
Turn 178. After finishing another unit of Beastmasters in Mortensholm, the Doviello start building a Momument there. They are growing softer, apparently.
Sometime between turn 178 and 188 we produced a Settler.
Turn 188. Using the Chaos mana, the Doviello Shamans had managed to successfully mutate a whole unit of Beastmen produced in Fjirgard.
Turn 189. Finally, Lucian and some other Beastmen that were produced in the Doviello settlements besieged Junon. Meanwhile, Cassiel had built what a besieged city under the attack of two enemy nations needs the most - three Workers.

So that's how all that pillaging payed off!
Turn 190. Lucian and 4 Beastmen units attack Junon. First Beastman loses against a Warrior, second destroys a Scout, third dies, when attacking a Scout, (what a loser), Lucian kills a scout.
Junon now belongs to the Doviello people, with a nice stack of Workers we can upgrade whenever we want. Thanks, Cassiel.
We get 135 gold from capturing Junon, eliminating Cassiel.
(What is the reason for the scouts to have UNITAI_CITY_DEFENSE anyway? I think these City Defense Scouts are responsible for so many early eliminations to the barbarians).
Oh, and one of the Doviello looters founded a strange staff, which, most likely, belonged to one of the fallen Grigori warriors. It gives affinity for Fire mana, which we don't have.
Overview. The Settler party is in the food rich area west of Mortensholm, but I leave the decision of what to do with it to the next player.
Our economy isn't that good.
Acheron made the ruins of the Malakim capital his residence.
It's turn 190, and 5 civs are already eliminated. Jeez.
The save is in the attachment.