To access the following codes, you must first earn the given number of platinum. Upon doing so, pause the game and enter the following code.

 The Effect             Amount Of Platinum                  The Code

 Golden Gun                             1                                    B,Y,A,B,Y

Improved traction                  3                                   B,A,A, X,Y

Double damage                        9                                   B,Y,Y,X,B

Cloak                                           13                                  B,Y,A,Y,X

Full Battery                               15                                  B,Y,YA,B

Unlimited Ammo                    23                                  B,A,X,A,Y

Platinum Gun                           27                                  B,X,X,B,A

All weapons                               17                                   B,Y,A,A,B