I will admit I got stuck, a couple of times, but I played it on stream so I managed to complete them. My biggest issue was with the music box puzzle. I know that it's a staple, but I'm bad at those puzzles, so I had to open the DAW and cheat by slicing up the audio and cross-referencing the notes.
I think they are fine for RE-style puzzles, but maybe some hints would be nice.
The VOD for the playthrough is up if you're interested