Note: This is the CD add-on released in October, 2014 that must have the Protector SE cartridge inserted to play.
Hold Pause + 2 + 4 + 6 at the title screen. The sound of an explosion will confirm correct code entry. Repeat the process to disable its effect.
Pause game play, then hold 4 + 6 + 8. Release the buttons. A sound will confirm correct code entry.
Pause game play, then hold 0 + 7 + 5. Release the buttons. A sound will confirm correct code entry.
Enable all wave selects:
Enter the "Options" menu. Highlight the "Save/Exit" option, then hold Pause + Option and press B to exit the screen.
Complete all waves. A special "Victory" screen, ship, and Expert mode will be unlocked. Another "Victory" screen appears at the end of Expert mode.