The core problem with C.O.P. is that it is unfinished. The "dramatic" story is comical: there is a large cast of characters that NWR doesn't know anything about nor do they care to, and the plot is confounding and hard to follow. The gameplay is unpolished: driving isn't fun and gunplay is defective. The sound is just not good.
The game's shining moment is the engine, which is seemingly where most of VD-Dev's efforts were spent. C.O.P. is a forgettable title that had the extreme misfortune of coming out the same year as the vastly superior Grand Theft Auto: Chinatown Wars.