Three or four of the lead actors, the cinematography, and the majority of the fight choreography were positives. Michael Jai White and Madalina Anea were very good, and even George Remes over-the-top psycho was pretty well acted. Luke Goss, though, is a quality actor, who rose above the muck he was given to turn in a really good performance.
The biggest downfall of the film, besides Randy Couture's to-be-expected woeful acting, and the absolutely atrocious 'acting' performances of everyone else in the entire movie not mentioned already, was the script. It was beyond terrible.
One example - a completely unnecessary and ham-fisted attempt to divulge backstory, in an attempt to force the audience to care about a barmaid, delivered by a terrible actress, was so bad it, just, stayed bad. Not one piece of dialogue seemed to fit, and when you give bad dialogue to bad actors, it's not going to turn out well. One of the worst scripts I've seen filmed.
The setup for a sequel was obvious. White and Goss could definitely make a really good movie together, and these characters themselves would be fine. But a better director and an actual script would really help next time.