Here is the full list of unlockable achievements in Dead Rising 2: Off The Record for the Xbox 360.
There are no secret achievements in this game.
Adult Content (20) – Take an extremely erotic picture
Alpha Vs. Omega (20) – Have Denyce attack and damage Sgt Boykin
Award Winning Photography (20) – Photograph 75 PP stickers
Best of Friends (20) – Defeat 5 psychopaths in co-op
BFF (20) – Use the Snapshot skill move on a zombie
Camera Crazy (20) – Take a picture of a psychopath
Card Archive (20) – Collect 50 combo cards
Card Collection (20) – Collect 20 combo cards
Challenge Addict (20) – Get at least a bronze medal on 10 different single player challenges
Challenge Domination (20) – Get a gold medal on all single player challenges
Cramped Quarters (20) – Get 8 survivors into a vehicle
Dominoes (20) – Use the Jump Kick to knock down 100 zombies
Drugged Up (20) – Take a dose of Zombrex
Elite Killer (20) – Kill 1,337 zombies
Even More Help From My Friends (20) – Get a gold medal on all co-op challenges
Frank West: Cross Dresser (20) – Dress up completely in women’s clothing
Full Camera (20) – Fill your camera’s memory
Hands of Doom (20) – Unlock all skill moves
Help From My Friends (20) – Get at least a bronze medal on 10 different co-op challenges
I Got a Medal! (20) – Get a medal on a challenge in Sandbox Mode
Luggage Code (20) – Kill 12,345 zombies
Maintaining The City (20) – Visit 10 different maintenance rooms
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
Nice Shot (20) – Photograph a PP sticker
No Zombies In The Vents (20) – Unlock the secret shortcut
Out With the Old (20) – Defeat the motorcycle-riding psychopath
Party Time (20) – Get a survivor drunk
Photo Journalist (20) – Get back in the game by gaining lots of PP from pictures
Photo School (20) – Take a high PP value picture
Photo Album (20) – Photograph 25 PP stickers
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
We Have a Winner! (20) – Play a carney game and win
