Complex sentence: Betrayed by Zeus, Kratos is saved by the Titan Gaia, who tells him he must now find the Sisters of Fate, who can change his fate and prevent his death at the hands of Zeus.
Split into simpler sentences: Betrayed by Zeus, Kratos is saved by the Titan Gaia, who states Kratos must now find the Sisters of Fate. The Sisters can change his fate and prevent his death at the hands of Zeus.