At the pause screen press:
Up, Up, Down, Down, Left, Right, Left, Right, B, A.
The typing console will appear then type in the cheat:
Cheat code: Effect:
MorgyTheMole First Person/Headless
upthejoltcola Faster Music
chipmunks Squeaky Voices
stevebrooks Infinite Secondary Items
patrickdugan Animal Sounds
ArieannDeFazioWithFlair Increase the Size of Jennifer's Chest
reverb Remove Film Grain
SouthPeak Push Objects Away from Player
ihatefunkycameras Disable special tracking cameras
Complete each achievement to get the allotted gamerscore.
"It's Mine! ALL MINE!" (25):
Collect 10,000 Monster Tokens across all characters.
A Little Help Goes A Long Way (20):
Grab some buddies and see how many waves you can wade through in
the Co-op Dojo!
Collect 72 Specialty Melee Weapons!
Are You Crazy?! (10):
Frag 4 players in under half a second in any ranked match!
Are You Related To A Belmont? (20):
Don't just hide. Fight back! Score 30 monster stuns in a single
ranked monster hunter match!
Control Freak (20):
Perform all flag captures in a ranked CTF match!
Demolitions Expert (20):
Score all frags using only grenades in a single FFA Deathmatch game!
Did Someone Order Chinese? (15):
Find a way to deal with that pesky Granny evil cat shield! (on
Thriller or higher)
Dirty Deeds (10):
Score 10 frags by summoning homing explosive zombies while in
zombie form in a single ranked match!
Does Anyone Clean This Roof? (15):
Collect all weapon parts on Hell School Rooftops. (on Thriller or
Smash all the gravestones in the hidden graveyard and survive the
horror! (on Thriller or higher)
Fashion Show (70):
Unlock every character costume.
Go, Speed Boater, GO! (15):
Zeppelin Flyer X and The Leprechaun has challenged you to beat
his record! (Thriller or higher)
Grumpy Old Man (15):
He's old and grumpy, so try to show him you care by not letting
him get hurt. (Thriller or higher)
Have Fun Cleaning The Grill! (10):
Take road rage to the extreme and frag 20 players while driving a
High School Flag Team Captain (20):
Become a flag capping beast by using the flag to kill 4 players
in a single ranked CTF match!
Honed Survival Instincts (10):
See if you can get far enough going solo in the Co-op Dojo!
I Said Turn Off Your Car Alarm! (15):
Destroy all those pesky, loud cars in the Parking Lot with your
mech! (on Thriller or higher)
I Think We're Being Followed... (15):
Bring out the white knuckled driver in you and blast through the
escape! (Thriller or higher)
There has to be something useful in the castle jailcells...
right? (Thriller or higher)
Junkyards Just Aren't The Same (15):
Make a mad dash to Bob Zombie! (on Thriller or higher)
Killing Machine! (20):
Get 50% of the total kills in a ranked FFA Deathmatch game!
Leading Noobs To The Slaughter (20):
Destroy the opposing team by having your team win with 100% of
the kills in a ranked Team Deathmatch
Long, Hard Road Out Of Suburbia (20):
Travel 1,000 kilometers
Kill 10,000 monsters.
Master Of Your Domain (20):
Enter and never leave the hill in a ranked King of the Hill match!
Monster Survival Guide Pays Off! (10):
Try to win a 10 minute or longer ranked Monster Hunter game
without being turned in a monster!
Unlock every Bestiary entry.
Nice Guys Finish Last (20):
Become a saint and win a ranked friendly fire token race match
without killing any other players!
Prowler On The Roof (15):
Collect all weapon parts in Streets of Suburbia. (on Thriller or
The Bodyguard (15):
These gold zombies trust you with their life. Show them you mean
business. (on Thriller or higher)
They Wouldn't Spend It Properly (15):
Let the monsters know that you're looking after their best gold
interests. (Thriller or higher)
Trap Assassin (15):
In Zack's House, use your cunning to defeat all of the enemies
with traps! (on Thriller or higher)
Very Sneaky, Sir (15):
Show them you're a ninja of the night when taking back what's
rightfully yours. (Thriller or higher)
We Don't Need No Stinkin' Ammo! (15):
Resupplying is for the weak! Beat the final showdown without
buying more ammo! (Thriller or higher)
What's That Sound? (15):
Why waste ammo when a massive, angry ball of death will do the
work for you? (Thriller or higher)
When Household Appliances Attack (15):
Show the monster masses that vacuuming can be fun... by using
excessive force! (Thriller or higher)
You Got Fur In The Hyperishdrive (15):
Can you escape the garbage trucks of death without boosting? (on
Thriller or higher)
Your Kung Fu Is Strong (20):
Defeat all challengers using only your melee weapon in a ranked