The instant defeat of a powerful corrupted undead caused many of the Genesis forces to shout and roar. They were witnessing one of their strongest clear the entirety of the remaining corrupted undead or force them in to the vines that had just been grown in to a wall.
As Scylla pushed ahead past the walls, no one else needed to worry about the defensive line she was creating with every bit of her mana. They knew very well that it would be held while the base was set up.
Alma and her forces who had joined together to ensure that there was a way for them to be protected felt that her mana had run low. The elite archers and Gil also made their move to support her as she stepped back from the wall created. This wasn't because she was too weak, but because the corrupted undead trapped within them needed to be handled.