I'm doing another new run through Ragnarok and judt got through the Atreus/Asgard section and made it back to Midgard. When Kratos is attaching Speki and Svanna, Freya comments that "Their fur is matted. You should brush them or else they might become diseased."
Listen here lady, BOY found your half dead turtle that you attached your house to. Do not cite the Deep Magic to me, witch
I'm not sure if it counts as a spoiler but there should have been a hint that >!Odin was disguising himself as Tyr!< as early as Ironwood.
In Ironwood, Atreus is given the sack of marbles by Angrboda and told each marble contains the soul of a giant. Angrboda said "Or they could hide. In that choice they found peace. It made me think of the writing in Tyr's Temple "We will wait for word that gods grow good." The giants couldn't have hidden the tower *after* they hid in the marbles. I'm pretty sure it's explicitly stated that Tyr hid the tower to protect the giants. Odin as Tyr acts clueless as to where the giants could have gone/what happened to the giants because Odin himself didn't know what happened to the giants. Atreus should have been able to piece together that Tyr should know what happened to the giants but he doesn't.
That could just be bias on my part because I think the crew should have been able to figure it out sooner than they did. I also think Kratos trusted Tyr a little too much but I think that Mimir not picking up on it fooled Kratos by extention since Kratos explicitly trusts Mimir. Again, shouldn't Freya or especially Mimir been able to piece together that it was Odin in disguise? Knowing more about Tyr's personality during Valhalla it seems more unlikely than ever that Mimir could be fooled by fake Tyr's cowardice and cluelessness on things Tyr should have known about.
That said, I want to clarify the player could never see the twist coming and it was one of the best plot twists I've seen in gaming. I just don't think the disguise should have worked as long as it did.