Dreadfully uninteresting

Maybe it could have been a good movie, if it had actors in it instead of people just reading their lines. Maybe it could have been a good movie if it had showed us something relevant instead of telling us in an extreme overuse of voice over narration.

All in all, Nordic mythology is always quite dull and primarily exists to put kids to sleep, because it's so boring that even kids are not interested in it. If you want to make a mythology-based movie, stick to the Mediterranean world or the mythology of Native Americans.