>>12153086
The piano puzzle is brilliantly designed and I will never understand why it gets so much flak, shit like the Shakespeare puzzle in 3 are FAR worse and genuinely unfair. How far did you get in it before giving up?
The closet has really plainly visible white scratch lines on the ground IIRC.
The Zodiac puzzle I agree with, I don't even consider it a proper puzzle, it's just a bullshit test. They give you the solution in your face immediately but then throw a gigantic red herring at you that has nothing to do with the puzzle just to confuse you and throw you off.
You are pretty much guaranteed to get Bad or Bad+ your first time, the game is designed for multiple playthroughs. IIRC there is a memo somewhere in the game that mentions Aglaophotis and it's appearance so collecting it isn't that much of a reach, although I still think the timing of when to use it during the Cybil fight is fucky.