The first thing I noticed about this movie was how well everything was set up. A quality movie all round.
I suppose you could love this film just for its action, but I liked it for more than that.
This is a pure thriller/horror movie. It offers a more fully-fleshed script than most horror films do. I thought, at least the U.S. version, ended brilliantly, and was great throughout. The story felt honest and brutal.
The film has an excellent, tight script that keeps the action moving, with believable characters in largely believable situations.