Walkthrough for the "Tribes of the East" expansion.

Hi everyone! Your forum helped me when I was completing the "One Clan - One Khan" mission. Now I'm stuck on the very last mission; I can't defeat Kujin's city. I've read a bit here, but I couldn't figure anything out. Maybe someone knows something? (Stopping her isn't an option; she doesn't stop, and the second hero only has one trapper, and the "plate" doesn't seem to arrive either).