The good: high pace, exciting, 2 hours of hard suspense. Decent (but not overwhelming) acting performances. Dark, grim atmosphere throughout the whole movie. I didn't get bored for a second. Many similarities to De Zaak Alzheimer, but with an even higher tempo.
The not so good: bad, sometimes even corny plot twists. Certain things were just too unrealistic and could have been done better. It seems to me that either they had to cut the movie to fit within 120 minutes or they were out of money. The ending was disappointing, compared to the rest of the film.
It does make me think about how a situation like this would play out in real life. Let's hope that it never comes to that.