sentences:  Kratos falls into the River Styx, where he loses the Blade of Olympus before the souls of the Underworld weaken him and ruin the Blades of Athena.Climbing from the river, he is greeted by Athena's spirit, who was brought to a higher existence after she sacrificed herself to save Zeus from Kratos.She gives him the Blades of Exile and tells him he must extinguish the Flame of Olympus to kill Zeus.