Have just watched it... twice.
I really liked it.
Sound and picture is excellent. (Norsk dts)
The comedy, and there's not lots, is in the vein of Shaun of the Dead.
It's not too silly or knowingly winking at the camera but it's not a full on serious horror film either.
Acting is good and it's very well photographed - it does not look or sound like a budget horror film.
Gore when it starts is good and lots of it, including a chainsaw scene which The Evil Dead only hinted at.
Also, and this must be a first, this english cover is the best so far, the Norwegian one makes it look like a Carry On film and the French one although good features a scene that does not actually appear in the film.