Dead Rising 2: Off the Record Cheats

Making Memories (20): Take a picture of your co-op partner during co-op play.
Mixed Messages (20): Take a picture with elements of horror, brutality, outtake and erotica in a single shot.
More Help From My Friends (20): Get at least a bronze medal on all co-op challenges.
New Hotness (20): Build one of the combo weapons new to Dead Rising 2: Off The Record.
Out With the Old (20): Defeat the motorcycle-riding psychopath.
Party Time (20): Get a survivor drunk.
Photo Album (20): Photo Album (20)
Photo Album (20): Photograph 25 PP stickers.
Photo Journalist (20): Get back in the game by gaining lots of PP from pictures.
Photo School (20): Take a high PP value picture.
Powered Up (20): Restore power to the Yucatan Casino.
Prestigious PP (20): Get over 2,000 PP from a single zombie kill.
Prom Night (20): Kill 69 zombies.
Puking Rally (20): Have a zombie slip in a puddle of vomit.
Purewal Memorial Cup (20): Don't consume any meat, dairy or alcohol until the military arrives.
Raw Emotion (20): Take a photo of a survivor in a very dramatic situation.
Safety Check: Failed (20): Use the amusement park rides to kill 10 zombies at once.
Save the Girl (20): Rescue a damsel in distress from the Twin Terrors.
Save the Girl... Again (20): Save the damsel in distress a second time.
Save the Girl... Yet Again (20): Save a damsel in distress for the third and final time.
Six Digits?!? (20): Kill 100,000 zombies.
Team Player (20): Avert a mutiny.
Technological Terror (20): Destroy a "harvester".
The Challenge Experience (20): Get at least a bronze medal on all single player challenges.
Tiger Tamer (20): Have Snowflake attack and damage a psychopath.
True Colors (20): Defeat the mastermind of the Fortune City incident.
Unlock the secret shortcut.: Unlock the secret shortcut.
We Have a Winner! (20): Play a carney game and win.

Unlockable Clothes
Dealer Outfit: Find it in the managers office where you save Lenny Mooney in the Yucatan Casino
Ninja Hood: Find it in the secret sniper spot in Royal Flush Plaza
Ninja Outfit: Get the achievement "Elite Killer" which is to kill 1337 zombies.
Protoman Blaster and Shield: Finish the game with an S Ending (Beat Overtime)
Protoman Boots: Find them in the store "The Man's Sport" in Uranus Zone.
Protoman Helmet: Save Jack in the "Welcome to the Family" case, then beat him in strip poker in the "Ante Up" case.
ProtoMan Suit: Get Bronze or better on all challenges in Sandbox Mode.
Psycho Boots: Early in the game, once you get Rebecca to the security room, the boots are inside
Psycho Mask: It is in the wedding chapel where you fight Randy
Soldier Face Paint: Find it in Shanks in Palisades Mall
Sports Fan Face Paint: Find it on the awning at Americana Casino
Willamette Mall Uniform: Visit 10 Maintenance rooms (this also unlocks the Maintaining the City achievement)

Infinite 500 PP
During the "TK Needs Zombex" mission, you are able to photograph TK in the clinic. If you photograph the side of his head, it will award you with 500PP every time, and the amount of PP will not reduce. Keep doing this for infinite amounts of PP.