Ok,
Declaring war on the city, Omega's soldiers moved into the city swiftly, within 1 hour the king had committed suicide and the people surrendered to Roman rule.
However some of the people did see Rome as enemy invaders, and, the day after the surrender, took to the streets and starting attacking Omega's men. But armed with nothing but butcher knives, these resistors should be put down in good time.
I will post screenshots next weekend. For now formulate a strategy to finish off the Gauls and invade Germania.