credit: Jagger
source: game genie forums
Here is my Save With Fresh Story line Day 1 on PS3. Sandbox mode weapons are not infinite just Story Mode.
Level 50 Character
Infinite Health
Running Speed 3x
Maxed Skills
1,004,814,319 PP
1,920,029,800 Money
9,999,999 Zombies Killed
Weapons in Inventory
Super B.F.G - (Ammo Never Decreases when Shot)
Laser Sword - (Unbreakable)
Laser Gun - (Ammo Never Decreases when Shot)
Magician Sword - (Unbreakable)
Sniper Rifle - (Ammo Never Decreases when Shot)
LMG - (Ammo Never Decreases when Shot)
Merc Assault Rifle - (Ammo Never Decreases when Shot)
Katana Sword - (Unbreakable)
SixShooter Pistol - (Ammo Never Decreases when Shot)
Assault Rifle - (Ammo Never Decreases when Shot)
Battle Axe - (Unbreakable)
Save Slot 1 so it will overwrite any save in that slot.
Reassign with Game Genie to your Profile and Enjoy!