Here is the full list of all 50 Dead Rising 2: Off The Record (GFWL) achievements worth 1,000 gamerscore.
Built one of the new combo weapons. Now put it to good use!
Got a medal on a challenge! It says "Participant" in small letters at the bottom...
Took a dose of Zombrex. Say what you will, the stuff works.
Took a picture worth 1,000 PP. Front page material!
Killed 69 zombies. Crude humor at it's finest.
Get back in the game by gaining lots of PP from pictures.
Take an extremely erotic picture.
Take a picture with elements of horror, brutality, outtake and erotica in a single shot.
Take a photo of a survivor in a very dramatic situation.
Fill your camera's memory.
Photograph a PP sticker.
Photograph 25 PP stickers.
Photograph 75 PP stickers.
Take a picture of your co-op partner during co-op play.
Take a picture of a psychopath.
Use the Snapshot skill move on a zombie.
Get at least a bronze medal on 10 different single player challenges.
Get at least a bronze medal on 10 different co-op challenges.
Get at least a bronze medal on all single player challenges.
Get at least a bronze medal on all co-op challenges.
Get a gold medal on all single player challenges.
Get a gold medal on all co-op challenges.
Rescue a damsel in distress from the Twin Terrors.
Save the damsel in distress a second time.
Destroy a "harvester".
Defeat the mastermind of the Fortune City incident.
Save a damsel in distress for the third and final time.
Unlock the secret shortcut.
Avert a mutiny.
Restore power to the Yucatan Casino.
Defeat the motorcycle-riding psychopath. [Story Mode Only]
Kill 1337 zombies. [Host Only]
Kill 12,345 zombies. [Host Only]
Kill 100,000 zombies. [Host Only]
Use the Jump Kick to knock down 100 zombies.
Get over 2,000 PP from a single zombie kill.
Visit 10 different maintenance rooms.
Collect 20 combo cards.
Collect 50 combo cards.
Unlock all skill moves.
Play a carney game and win.
Defeat 5 psychopaths in co-op.
Use the amusement park rides to kill 10 zombies at once.
Get 8 survivors into a vehicle.
Get a survivor drunk.
Have a zombie slip in a puddle of vomit.
Dress up completely in women's clothing.
Don't consume any meat, dairy or alcohol until the military arrives.
Have Snowflake attack and damage a psychopath.
Have Denyce attack and damage Sgt Boykin.