The one Stars are on Crack. It's an original take on the Genre. The Soundtrack was a turning point for Russian movies. Usually they play old school opera tunes. This soundtrack was very modern, and fit every scene. It beyond added to the atmosphere and tension. Maybe people hate the dubbing but I watched it first in Russian. Both versions are great in My book. This and Sputnik are the two best Russian movies I've seen and Coma, or Furious are close for 3rd place. Amazing the things Russia and South Korea are doing with movies. At a budget of 4 million it looks just as good if not better than some Marvel garbage.
The acting isn't bad at all. Better than most American movies for sure.