No need to detail what others have written in other reviews - here goes the summary:
* Much of the nested animation work is downright gorgeous - the colors are superb - would love to have it done in silk as a necktie
* The story and execution is a total snooze - it was quite difficult to stay awake at times
If you are a student of the fine arts, medieval calligraphy, early religion and so forth - have at it. This is a FILM for you.
If you want an engaging, entertaining MOVIE - look elsewhere - this is a failure as anything other than an artistic statement.
Vikings didn't have horns by the way...