There is a funny lost scene in the game (even though it's a horror game?!).

1) Make a savegame where you're ALMOST at the end of the game.

2) Set your computer's clock on 24 May 1983 (Which is the Birthdate of the creator).

3) Start the game and restore the savegame.

4) Complete the game

After the ending cutscene, you will see the the layout of a new day, but instead of the name of a weekday, there will be written "Birthday". Then you will see a little movie of The Welder visiting you (the psychologist). Enjoy!