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I also love that the redemption in God of War isn't tied to forgiveness, like so many other redemption arcs in media (see Zuko's). Kratos at one point literally says he doesn't care if Freya forgives him. It's honestly refreshing to see a story that says "Whether or not other people forgive you doesn't matter, only that you are a better person," it really works with the catchphrase (I'm not sure if that's the right term) "We must be better."
I like that God of War never makes it a question of deserving. Did Kratos 'deserve' his redemption? Probably not but he chose to be better in spite of that and that's what matters, so did Thor right at the end. On the other hand did Baldur 'deserve' his death? Again, probably not but he made it clear his choice was made no matter how many chances he was offered.