Great opening, Sauron, I assume you will assist in the defense of the city?

I do need to know what everyone else is doing.

Viqtor is going to the Manufactorum as he will be want to see the Titan as soon as possible. So, join him if you want to fight your way through a heavily entrenched Ork WAAAGH!!! Heavy Vehicles will be used, but probably nothing larger than a Land Raider.

Karrina will be in charge of the Tau forces in the defense of the city. So, join her if you want to be there when the shit hits the fan and Chaos finds its way into the city. Daemons and Chaos Marines everywhere. Light Vehicles only, as this is urban warfare. That being said, i imagine Synods guy will have a lot of fun, charging through the streets at high speed, on the back of a Tauros, gunning down or running over anything Chaos related.

All will be made clear when Viqtor gives the mission brief, for the moment, all you know is you are going to battle.