At the beginning of the game if you go to the tv and let the audio start and then go back to the shower then let the audio stop it cancels the pot falling over to get the key. Another one is when you type the number on the phone sometimes it just doesn't trigger the door opening and i don't know the reason. Lastly sometimes the door to get the number won't open. I believe these problems are tied to the player moving too quickly through the events which can sometimes cause them to break because it doesn't expect the player to be there at that point.