I liked it, and the customization was fun, but what it came down to on barrels, stocks, magazines, etc, is you either had a fast firing SMG or a DMR in semi. Less damage, faster firing, less accuracy or really accurate, powerful shots. Everything else in between you could class as an assault rifle somewhere, but there were very obvious extremes. The grenades were probably the coolest innovation, but the blacklight mode thing where you can see enemies lasted too short and didn't regen fast enough to be terribly useful most of the time.