You clear the east wall and land on the battlements. There is a cheer from the defenders as word of Ari (and Astrek) and Nisoru's return spreads. Nisoru says: I am going to Arion. He is fighting the doggeden. He takes Parker and Rubius across the courtyard to the west wall. Luigi, seeing the other wizards seem to be concentrated there follows as well. As you cross the courtyard you can see that as many people as possible have crammed into the inner bailey around the palace and that the marks of several fireball detonations can be seen closer to the outer walls.
As they fly away Asinjin places his motes in a pattern sure to disrupt the barbarian advance. The motes are even more effective than usual as the barbarians have no regard for their fellows and those that are enchanted are trampled by those behind until each cube is filled with crushed berserkers.
Ari has a few moments to consider the juggernaut from the battlements. It is a terrifying sight, towering above the castle walls and crushing the frozen ground beneath its rollers. It is covered in blood and on the eighth tier you can see Minister Drayton, chained in place and seemingly mesmerized. Above him you can see the pulsing red ruby heart and you have no doubt it perceives the situation around it in some way.
As Elayu swoops down towards the battle on the west wall Nisoru leaps off and onto the doggeden's head, avoiding its lashing tongue. Standing before the beast's maw is Lord Whiteknight, slashing at its muzzle with his sunblade. Arion is surrounded by a huge globe of white light with Martine beside (sometimes before) him. They are fighting the elite of the berserkers as they clear the doggeden's back. Parker finds Thale, Thamolly and Russel, who are coordinating the magical assault on the horde.
Meanwhile, Asinjin is admitted to the palace where he finds thousands of children, most crying, being comforted by Lira, Queen Degala and the young queen in waiting of the south. Groups of jesters and bards, mostly students from the college are moving among the throng performing tricks, telling stories, singing and playing instruments. Asinjin is lead to a quiet room to memorize his missing spells.
Some specific input would be helpful at this point.