stuck in the game

Send Pachacuti, Joan Of Arc and Cleopatra to the southern city. Reinforce Atilla's forces with the rest of your army, seize ALL the training buildings and treasuries.
Have the southern Army take the Stavle outside the walls, then be a noob like me and charge the reinforced walls. Have the northern army tear through the blockades and into the city.

I managed to tear down both defenses so the only problem might be your speed. Also, completely block the gates to prevent enemy troops from leaving their safe zone.