Extra weapons
Start a new game and wait until the loading screen that feature the dancing pigs appears. Then, hold R1 and press Select, Right, Left, Down, X, Circle, Start. Finally, when loading has completed, press Start.
Change hair color
At the options screen, hold R1 + L1 + Select + Square and press Left, Down, Right, Up(2), Right, Down, Left.
Refill health
Since the game does not save your health status, simply save, quit, then restart from the saved game file to restore health.
Infinite Health | D00A5430 0003 800A5430 0004 |
Infinite Lives | D009BCE8 0102 8009BCE8 0103 |
Moon Jump | D009C9D8 4000 800A54B0 0005 |