In fact, parts of it I liked a lot. It had some interesting twists. But it just left me with a been there, seen that feeling after all of the SAW movies. Granted the ending was different from a typical Saw, but let's face it...a group of guys, unknown to each other (or so they believe) tossed together in an abandoned chemical factory....
But then it loses something. There's no intensity, there's poor group dynamic, there's no sense of urgency.
Some nice twists at the end, and definitely worth a watch if there's nothing else on your plate, but it just left me empty...it passed the time, but it didn't satisfy.