This trophy will unlock after you enter the first stage of Rapunzel's Extra Mode. This is a set of 64 more stages that can only be unlocked after beating Rapunzel's Normal Mode and getting the good ending by collecting 4 Rosaries in stages 52, 56, 60 and 64 in one session (dying is permissible, but getting a game over or quitting is not). This will give you a code to enter at the title screen, which in turn can only be entered when there's a heart icon in the logo, denoting that you've gotten the good ending.

The code is: ,  ,   ,    , . Entering the code correctly will change the logo to darker colours, denoting that it's been entered correctly.