The massive walls around the city was like a hedge, and none that was not too easy to go over seeing as they were all close to a hundred feel tall. The tree city, had parts of it that had been hollowed out, in fact it was through one of the largest hollow you could get a good look into the city itself.
On the walls Cole could see Animechs with long range capabilities, siege engines or rather engines utilized to stop sieges. These guys were prepared, and with how much food they were sitting on, it was hard to see a way that Cole would be able to break through those defenses, he would need to get close to be able to go through, but they would pick them off all one by one before they got close, and to make matters worse, Cole had no access to his hot weapons, if not he would have just snipped them all from a distance.