×

After starting a new game, press start immediately when you start gameplay hold down L1 and R1. Press buttons in this order (Triangle triangle X circle circle triangle square square x x x triangle) Unpause the game and pause it again, you will have full inventory, all upgrades full animals, all tools, all power nuts and so forth, the only thing you are missing is a wife.
This is untrue because everytime you hit the x button the start menu closes.