One thing though - the door mechanism puzzle
at the beginning of Episode 3
has a random element to it. The 1st, 2nd, 3rd and 5th direction are static but the 4th is random.
Look at the solution from TriRock
There seems to be a way to cheese it. Mr Oscar 100
commented that you could pick up the umbrella, remove the painting and take a look at the direction then load your auto-save and the direction you saw behind the painting would work in the puzzle.
At least it worked for him and I can confirm that it also worked for me (and for me the direction was northeast not south like the walkthrough stated).