The following procedure involves editing a game file so it is advised that you create a backup copy of the file before proceeding. Use a text editor to edit the 'User.ini' file in the '\My Documents\Lemony Snicket' directory. Then bind one of the following codes to a key in that file, for example if you wanted to use the F1 key for invincibility it should be 'F1=God' (without the quotes). When you now press the F1 key during gameplay the invicibility effect will become activated.
Flight Mode: Fly
No Clipping Mode: Ghost
Disable Flight and No Clipping Modes: Walk
Freeze everything except the current player: PlayersOnly
SO, I'm in Count Olaf's house and Klaus is in the big living-room with all the paintings of the pool-table... I know that I have to escape through the fireplace and that somehow it opens up, but what do I do with all the letters behind the pool-table paintings?