Patapon 3 Debug Mode -
, which allows activation via a button combo (Up, Up, Down, Down, Left, Right, Left, Right, L, R), requires external cheat codes or modified game files. Patapon Wiki EU Version (UCES-01421) : You can enable it using specific codes. Once the code is active, pressing the Square (□) button multiple times in the Hideout or holding L + Square during a quest will trigger the menu. Developer/Demo Builds
If only I knew how to use Debug Tools in PPSSPP - Patapon Wiki patapon 3 debug mode