To tell you the truth, I'm not a FAN of foreign-animated films. Why? Because English dubs of these films don't follow the original script and put some American humor in them. However, There have been a few that have caught my eye. "Asterix and the Vikings" is one of them.

"Asterix and the Vikings" is a gem, with good animation, well-chosen voice actors, and sticks well to the French comic book of which it is based on.

Recommended for all ages.

I hadn't hight hopes for this one. After all, it came after "Asterix in America", the weakest link in the chain so far. So why expect more of this one?
There were several reasons. The most important: this movie was helmed by Stefan Fjeldmark, a man who understands animation, unlike those people who did "Asterix in America" (maybe coming entirely out of a german studio had something to do with this...). He also directed "Jundgelydret Hugo" (or "Amazon Jack"/"Jungle Jack" in english), a truly great animated feature. Plus, he knows how to create an emotional response, especially when it comes to romance. Most animated love stories don't feel entirely right, something that can't be said about Fjeldmark's films. Goudurix (Justforkix) and Abba fall in love and it's so cute to watch that you can't help yourself but root for them.
The animation looks very nice. In a time where US studios think CGI is the greatest technique ever M6 Animation gives us beautiful, colorful hand-drawn characters that move and act as convincing as their rendered counterparts.
A "modern element" was always different for the "Asterix" movies. Too much and you end up with a rap or wild takes or something else that doesn't belongs into the world of the comic gauls. With Goudurix the makers have a perfect character at hand to inject new energy into the little village at the french coast. He can act modern and cool because, within the world "Asterix" takes place, he is all this. A "clash of cultures"-sorta thing is one important element of the movie so it's okay to have a cover version of "Eye of the Tiger" in it. In "Asterix in America" the Aswad-Song felt strongly out of place, here it fits.
"Asterix and the Vikings" is a worthy new movie for the series. At least it's way better than you ever could hoped to expect.