Now if you care about how much work has been done in preparation to do a movie, you will quite impressed with this movie. It shows on screen, but if you needed confirmation the director talks about it (interviews and audio commentary). The actors are overall good and for a german language (actually the director is from Austria and yes there is a difference) movie this is quite decent in its production values.
Now some things are dated, especially when it comes to technology. Although some like to use "retro" cell phones right now, this is just one of many examples. The story is ok and the stunts are good too. Camera work is quite nice ... it helps with the story.