I never leave reviews for movies, but this movie is an exception.
With so many nods to the eddas and sagas, it's hard to not notice how excellent it was. From the small moments to the overt mentions, it was literally saturated with the beliefs and traditions of their age.
Now if you don't know those stories then you're going to be very confused. A bunch of people at the end were upset, and let down.
Regardless, this movie was an absolute masterpiece. Completely flawless.