Loved the clock puzzle and the diagram behind the painting. Quite satisfying puzzles! I also spent way too much time just looking at the torn engineering pad reading the different equations. Looks like a piece of scrap paper I would have kept on my desk in university lol.
I did misread one clue (va gur zveeberq pbqr, V gubhtug gur sbhe jnf n avar), and actually ended up brute forcing two codes because of it (one intentionally, the one I misread by accident when I went to revisit it). Ultimately not too frustrating because it was obvious what I had done when I saw the accepted code and found the clue I was missing.
I also wasn't able to plat the game in fullscreen mode because the left and right edges of the game got cut off (the right arrow almost entirely gone, so just about unplayable in full screen). This would be the aspect ratio of the game just not matching the dimensions of my screen. Not sure if that's something you can fix (or even care to fix, I was perfectly happy playing the game not in fullscreen), but I use firefox if that makes a difference.