For anyone encountering the bug with the second to last scene not unlocking, open the 'game' directory (It's in the same folder as 'ThePrank.exe') and open 'script.rpy' in a text editor. Change line 3837 from
$ persistent.HjortGyldenEnding
to
$ persistent.HjortGyldenEnding = True
The 'T' must be uppercase, the others lowercase. Restart the game if it is running, then play through the game as normal until you reach the scene and it will now unlock.