In the beginning I would like to apologize for the end of video being a desperate trying to do anything to proceed.
The game itself has a very good mechanic of a ghost being useful in coming across many gaps and doors. It took me a while to realise that I can actually use the ghost to jump on it and go ahead. The only issue I had so far is with the very loud wind in Chapter 3. I'm looking forward to play some more and encounter the boss.