To bring up the code entry screen, pause the game in Adventure mode and press UP(2), DOWN(2), LEFT, RIGHT, LEFT, RIGHT, B, A. Activate the following cheats by entering the corresponding codes:
CHEAT FUNCTION - CHEAT CODE Invincibility - TimSweeneyHealth13 Arrows reveal weapon parts - WeaponPartTesting Increased vehicle firepower - AndyGomez Unlimited chainsaw - CliffyBFTW Unlimited secondary items - stevebrooks Unlimited specialty melee attack - JenniferSweeney Blurry screen - Spielberg Disable special tracking cameras - ihatefunkycameras Empty shells stay in the air - GearsFTW Faster music - upthejoltcola Cactus Jack First person view - MorgyTheMole (press Y to return to third person view, although without a head) Jennifer's chest is bigger - ArieannDeFazioWithFlair Monsters explode upon death - Willy Monsters have more health - Legendary No monsters - UnrealEngine3 Push objects away from player - SouthPeak Slow motion - ZombiesHaveEatenMyNeighbors Slow motion when hitting monster - StreetFighter Slower framerate - GimmeFramerate Low pitched voices - TalkDirtyToMe Animal sounds - patrickdugan Higher pitched voices - chipmunks Very fast movement and weapon fire - MonsterHunter Super jumps - Armstrong Mirror mode - MirrorMirror White graphics - TokenInverse Blue and orange graphics - TitleTown Red graphics - NotQuiteTitleTown Remove film grain - reverb Upside down screen - TopsyTurvy
ACHIEVEMENT - HOW TO UNLOCK Fashion Show (70 points) - Unlock every character costume. Monsterologist (20 points) - Unlock every Bestiary entry. Maniac! (30 points) - Kill 10,000 monsters. Long, Hard Road Out Of Suburbiacheck (20 points) - Travel 1,000 kilometers. Archaeologist (45 points) - Collect 72 Specialty Melee Weapons. "It's Mine! ALL MINE!" (25 points) - Collect 10,000 Monster Tokens across all characters. Trap Assassin (15 points) - In Zack's House, use your cunning to defeat all of the enemies with traps on Thriller or higher. Prowler On The Roof (15 points) - Collect all weapon parts in Streets of Suburbia on Thriller or higher. Did Someone Order Chinese? (15 points) - Find a way to deal with that pesky Granny evil cat shield on Thriller or higher. You Got Fur In The Hyperishdrive (15 points) - Escape the garbage trucks of death without boosting on Thriller or higher. Junkyards Just Aren't The Same (15 points) - Make a mad dash to Bob Zombie on Thriller or higher. I Said Turn Off Your Car Alarm! (15 points) - Destroy all the pesky, loud cars in the Parking Lot with your mech on Thriller or higher. The Bodyguard (15 points) - These gold zombies trust you with their life. Show them you mean business on Thriller or higher. When Household Appliances Attack (15 points) - Show the monster masses that vacuuming can be fun by using excessive force on Thriller or higher. Grumpy Old Man (15 points) - Do not let the old man get hurt.on Thriller or higher. Very Sneaky, Sir (15 points) - Show them you are a ninja of the night when taking back what is rightfully yours on Thriller or higher. Does Anyone Clean This Roof? (15 points) - Collect all weapon parts on Hell School Rooftops on Thriller or higher. Exhumed (15 points) - Smash all the gravestones in the hidden graveyard and survive the horror on Thriller or higher. Go, Speed Boater, GO! (15 points) - Zeppelin Flyer X and The Leprechaun has challenged you to beat his record on Thriller or higher. What's That Sound? (15 points) - Why waste ammo when a massive, angry ball of death will do the work for you on Thriller or higher. They Wouldn't Spend It Properly (15 points) - Let the monsters know that you are looking after their best gold interests on Thriller or higher. JAILBREAK! (15 points) - There has to be something useful in the castle jail cells. on Thriller or higher. We Don't Need No Stinkin' Ammo! (15 points) - Beat the final showdown without buying more ammo on Thriller or higher. I Think We're Being Followed... (15 points) - Bring out the white knuckled driver in you and blast through the escape on Thriller or higher. Honed Survival Instincts (10 points) - See if you can get far enough going solo in the Co-op Dojo. A Little Help Goes A Long Way (20 points) - Grab some buddies and see how many waves you can wade through in the Co-op Dojo. Killing Machine! (20 points) - Get 50% of the total kills in a ranked FFA Deathmatch game. Control Freak (20 points) - Perform all flag captures in a ranked CTF match. Are You Crazy?! (10 points) - Frag 4 players in under half a second in any ranked match. Monster Survival Guide Pays Off! (10 points) - Try to win a 10 minute or longer ranked Monster Hunter game without being turned in a monster. Master Of Your Domain (20 points) - Enter and never leave the hill in a ranked King of the Hill match. Leading Noobs To The Slaughter (20 points) - Destroy the opposing team by having your team win with 100% of the kills in a ranked Team Deathmatch. Your Kung Fu Is Strong (20 points) - Defeat all challengers using only your melee weapon in a ranked FFA Deathmatch. High School Flag Team Captain (20 points) - Use the flag to kill 4 players in a single ranked CTF match. Nice Guys Finish Last (20 points) - Win a ranked friendly fire token race match without killing any other players. Have Fun Cleaning The Grill! (10 points) - Frag 20 players while driving a vehicle. Dirty Deeds (10 points) - Score 10 frags by summoning homing explosive zombies while in zombie form in a single ranked match. Are You Related To A Belmont? (20 points) - Score 30 monster stuns in a single ranked monster hunter match. Demolitions Expert (20 points) - Score all frags using only grenades in a single FFA Deathmatch game. Block Party! (25 points) - Beat Chapter 1 Suburbia Nightmare. Shop 'Til You Drop (25 points) - Beat Chapter 2 Shopping Maul. School's Out Foreva! (25 points) - Beat Champter 3 Hell School. Graveyards Creep Me Out Too (25 points) - Beat Chapter 4 Cemetary Scary. Have Fun Stormin' the Castle! (25 points) - Beat Chapter 5 Evil Castle. Hard Day's Rockin' (25 points) - Play at least 24 hours of the single player adventure. Homemade Weapon Club Card Holder (10 points) - Attain all Level 1 weapons. Homemade Weapon Club Chairman (20 points) - Attain all Level 2 weapons. Homemade Weapon Club Founder (30 points) - Attain all Level 3 weapons. Accessorize To The MAX! (10 points) - Carry all secondary items at once.
In the Streets of Suburbia, at the intermission sequence with Fat Zombie, immediately run on the left side of the downed power line and the mini fence. Once there you should find a trampoline. Jump on it and stay on the houses. The Exploding Zombies will not be able to hit you, but will damage Fat Zombie. When you see Fat zombie jump, run to the right onto the taller house and you will not be dazed. Keep hitting him with your nailguns and throw your bombs at the tree so that they will bounce back at Fat Zombie until he has been defeated. This is helpful in Horror, when you fight two Fat Zombies.
When you are on the bridge going to the police station and you get the go-cart after the scene with the bikers, get into the passenger left side. Keep pressing A and the go-cart will begin to go crazy all over the screen. Note: This may cause you to die.