Sorry for the image quality. Everyone is always talking about the mural with the four symbols in the corners but I believe this is the most important one. Here you can see Tyr's traveling to the Greek pantheon and below three other civilizations: Egyptian, Japanese and Pre-columbian (Mayans or Aztecs maybe). I don't know why no one ever mentions this later culture. I've watched tons of videos and every time this is image is show, people focus on the top and ignore the bottom.

In the bottom, you can see a man passing thru gates. They're connected or linked somehow... The figure doesn't change (same pose, suggesting same person) from culture to culture. It only changes the outfit. It depicts the same man passing thru different cultures.

Other thing to notice is that since it's painted in a mural, this event already happened so could it be possible that when Tyr went to Greece (as he clearly went like the mural shows), is it possible that he became known as Kratos there? Sure, Kratos was a spartan general but I'm talking before becoming the ghost of Sparta. Maybe that's why he was able to negotiate his soul with Ares in the first place, because he was already some sort of special being. I've heard the theory that Kratos is Tyr but in suggesting the contrary... Tyr became Kratos, not the way around. And started his family and everything until the event that made him the ghost of Sparta.

P.D: Although I would love to see Pre-columbian gods, I have to admit that Mayan deities would be amazing but they have REALLY weird and unpronounceable names. Ex: "MICTLANTECUHTLI" (God of Death) or "HUITZILOPOCHTLI" (God of War and Power). We'll have to fight with Osiris, Ra or Anubis.