I didn't have Valhalla to watch when I watched Vikings but that's an interesting proposition.
Honestly, I cannot think how that might work to comment meaningfully 🙂
At work people have been bemoaning Halo and how bad that is in as far as it doesn't follow the games lore.
Personally, I found it entertaining for what it was and think they captured the Halo feel and characters quite well.
I'm a bit of a heathen mind, I tend to skip a lot of dialogue in games and race through them so the lore is not really of much importance to me 😄