Complete the following achievements to unlock Xbox Live Gamerscore 
points. 

Zombie Hunter: Defeat at least 1,000 zombies. 
Zombie Killer: Defeat at least 10,000 zombies. 
Zombie Genocider: Defeat at least 53,594 zombies. 
Self Defense: Defeat at least 1 psychopath. 
Peace Keeper: Defeat at least 5 psychopaths. 
Punisher: Defeat at least 10 psychopaths. 
Tour Guide: Escort 8 survivors at once. 
Frank the Pimp: Simultaneously escort 8 female survivors. 
Full Set: Collect all portraits in the notebook. 
Humanist: Get at least 10 survivors out of the mall. 
Life Saver: Get at least 20 survivors out of the mall. 
Saint: Get at least 50 survivors out of the mall. 
Strike!: Send at least 10 zombies flying with bowling balls. 
Costume Party: Place novelty masks on at least 10 zombies. 
Raining Zombies: Knock at least 30 zombies aside with a parasol. 
Gourmet: Eat all types of food available in the mall. 
Item Smasher: Break at least 100 items. 
Bullet Point: Fire at least 1,000 bullets. 
Perfect Gunner: Don't miss with a machine gun. 
Photojournalist: Score at least 1,500 PP from a single photo. 
The Artiste: Score at least 3,000 PP from a single photo. 
Group Photo: Get 50 Target Markers with the camera. 
Portraiture: Photograph at least 10 survivors. 
Census Taker: Photograph at least 50 survivors. 
Psycho Photo: Photograph at least 4 psychopaths. 
Psycho Collector: Photograph at least 10 psychopaths. 
PP Collector: Photograph all PP Stickers. 
Transmissionary: Answer all calls from Otis. 
Indoorsman: Spend at least 24 hours indoors. 
Outdoorsman: Spend at least 24 hours outdoors. 
Freefall: Drop from a height of at least 16 feet (5 meters). 
Marathon Runner: Cover a distance of 26.2 miles (42.195 km). 
Carjacker: Steal the convicts' vehicle. 
Stunt Driver: Jump a car at least 33 feet (10 meters). 
Stunt Rider: Jump a motorcycle at least 33 feet (10 meters). 
Karate Champ: Defeat at least 1,000 zombies barehanded. 
Sharp Dresser: Change into at least 20 different costumes. 
Clothes Horse: Change into all costumes available in the mall. 
Level Max: Reach level 50. 
Unbreakable: Get the true ending without being knocked out. 
Overtime Mode: Unveil all cases and be at the heliport at noon. 
8 Mode: Get the true ending. 
3 Day Survivor: Survive for at least 72 hours. 
5 Day Survivor: Survive for at least 5 days. 
7 Day Survivor: Survive for at least 7 days.