Or any kind of bad copper. Donnie Wahlberg's Eric Matthews was a key player in the first few sequels: in fact, he provided the inspiration for the whole game in Saw II. Jigsaw rounded up a group of people who had been the victims of Matthews' framing, and chucked in the dirty tec's son for good measure.

Matthews does his best to find the house and save the inhabitants, but in a typical Saw twist of fate it turned out he was the one being tested all along. He was then captured and later exited the franchise in grand style by having two blocks of ice smash his skull.

How Easy Is It To Achieve? Well it's probably a lot harder to do proper police work, collecting real evidence and all that, but it's worth it in the long run.

If You Really Have To: Then you should be a better bad copper like Mark Hoffman, who's so bad he gets to be a part of Jigsaw's team.