I felt it was almost a parody and thoroughly enjoyed the story because of that (how can you not laugh when both of the main characters are chewing on gravel as they speak while a woman who fits almost every support character cliche guides them during a journey where they will enter helicopters that only sometimes crash, at least when the main character isn't genre savvy enough to realize that Helicopter+enemy controlled airspace+action game=crash, and smoke way too many cigarettes?).
As for the action, the slowmo slide was a *****, but the other bullet time methods worked out well, the bosses were fun to fight even if they were all shoot the weakpoint battles (though that fight with the russain can piss off and die in some godforsaken hole where I never have to see it again), many times I frequently let out a "holy shit" at something I just did (sliding behind a tank with a shotgun and blowing it apart in slowmo made my day), the guns all felt powerful as they tore through robotic minions, and the enviroments I went through (while they blend together to the point that I forgot I was fighting my way up a giant transforming robot/cannon, not an easy task) were exceptionally nice to look at.
Also, I got the game for half off new so I can't complain really.
I know it's awesome huh? Just did an LP of it and the final boss ranked up in there with my all time favorite final bosses.