Up to the end, a good movie

The first half of the movie I really liked it very much, especially these horror phases which are announced by the siren. From the second half of the film, the horror have effects and scenes unfortunately waned and the movie was ... well at least softer than in the first half.

The end, the final "barbed wire" revenge I call it times, was again something for the eyes and I liked it very well. But then somehow the wars. I think the film has no real end, the viewer is then more or less left alone and allowed rumrätseln what now is. Which I thought was very disappointing.
Therefore 3/5