First and foremost, this movie was surprisingly released in 2000, and not in 1991 as it clearly looks. I'm still trying accept this. Let's just say the cinematography isn't a reason to see it.
Gen-X Cops 2: Metal Mayhem (also known as Gen-Y Cops) is a thoroughly amateurish, incredibly cheesy Hong Kong attempt at a Hollywood-style blockbuster. I haven't seen the first Gen-X Cops movie, so I can't compare the quality between the two. The sequel, however, falls firmly into the "so bad it's (almost) good" category. The dubbing is atrocious, the fight and action scenes (while occasionally entertaining) are poorly choreographed, some of the acting is beyond awful, and the story is a mess of stolen robots, police officers trying to clear their names, maniacal hackers, and slapstick humor. Probably my least favorite thing about it was that it was simply too long and too often it was boring.
I only watched the movie because of Maggie Q. (not nearly enough of her) and Paul Rudd (in his most ill-fitting role ever, though he still manages to be unintentionally funny). If you have similarly extraneous reasons or you just want to see a cheesy, weird movie, give Gen-X Cops 2 a shot. Otherwise, stay far, far away.