NiGHTS into Dreams... Cheats - Xbox 360
Primary Collection of Cheats
Unlock Everything
At the title screen, press [Left], [Right], [X], [B], [A], [Y], [RB], [RT], [Down], [Up], [LB], and [LT] in that order. If done correctly, you'll get a confirmation that everything in the game has been unlocked, though save data, achievements, and posting to leaderboards will be disabled until you restart the game from the Xbox Dashboard.