Unlock Infinity Mode:
     Successfully complete the game with the "True" ending.

Unlock Overtime Mode:
     Complete  the  first  72 hours of Frank's stay in the mall. Then,
return to the helipad by noon on the 22nd.

WEAPON LOCATIONS:

Locate Katana:
     Go  up to the second floor, then go to Columbian Roastmasters. Go
to  the  where  the  cash  machine  is  located them jump out onto the
roof/ledge  below.  Land  on  the  orange overhang. The katana will be
there.

Locate Sub-machine Gun:
     Jump  from  the  stairs closest to you when you start to the blue
ledge above Kid's Choice Clothing. Keep following the walkway past the
stuffed bear all the way to the end to find it.

Locate Uzi:
     In the Food Court, go to the sign with the Italian chef. Climb to
its left side. At the top is an Uzi.

Locate Shotgun:
     Get  to  the Entrance Plaza for the first time when man tells you
to  look  for  barricades. Notice that one of the men talking near the
entrance  has  a shotgun. When the zombies attack, run up to his body.
Pick up the shotgun.

Locate Small Chainsaws:
     After  killing Adam the clown by the roller coaster in Wonderland
Plaza,  he  will  drop  a chainsaw. Pick it up before you activate the
control  to  stop  the  ride. After the intermission sequence, another
chainsaw will spawn at the location. Pick it up. Get the Criminal book
from  the  back of the bookstore where you find the Japanese tourists,
and the Engineering and Entertainment books from the Book Store accros
from the toy store and CD store in Paradise Plaza. These will give you
three  duration  enhancers  for  the small chainsaws that you received
from  the clown. That will make these powerful weapons last for a very
long time.

JUICES:

     Juices  are  created  by  mixing two food items in the blender at
Columbian   Roastmaster.  All  juices  provide  full  health  and  are
short-lived.

Quickness (Move 5X Faster) = Mix Wine + Yogurt
Randomizer (Random Effect) = Mix Cooking Oil + Snacks
Spitfire (Deadly Spit) = Mix Baguette + Snacks
Untouchable (God Mode) = Mix Baguette + Pie
Zombait (Zombies More Attracted to You) = Mix Pie + Snacks
Energizer (Unknown) = Mix Randomizer + Zombait
Nectar (Unknown) = Mix Orange Juice + Snacks

ACHIEVEMENTS:

     Complete   the   following  achievements  to  unlock  X-box  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.
Legendary Soldier: Defeat a least 15 psychopaths.
Hella Copter: Repel a helicopter.
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.
Snuff Shot B: Successfully photograph zombie Brad.
Snuff Shot J: Successfully photograph zombie Jessie.
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).
Zombie Road: Walk over 33 feet (10 meters) on the backs of zombies 
using the Zombie Ride.
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.