Meh, so those guys survived to come back and bring the trouble back with them? They did manage to kill some of the monsters, so they helped increase the security of the town even if it wasn't their intention.
The stage is set for Raust to show off once again with that plan to (for some reason) get him to fight the Fenrir 1 on 1.
Well, well. What do you know, the city has walls after all... it's just somehow not used. Is it magically activated or something?