Unlockable cheats.
     Complete  the  story  mode  to  unlock cheats for purchase in the
store. You can activate them through the Extras menu.

Unlockable                        How to Unlock
Always wear the black suit.       Complete the story mode and purchase 
                                  from the store for 5,000 Hero Points
Invincibility                     Complete the story mode and purchase 
                                  from the store for 5,000 Hero Points
All enemies are robots            Complete the story mode and purchase 
                                  from the store for 5,000 Hero Points
Alternate touchscreen background  Complete the story mode and purchase 
                                  from the store for 5,000 Hero Points
Night-time mode                   Complete the story mode and purchase 
                                  from the store for 5,000 Hero Points