The quality and quantity of art is impressive!
I don't know if I happened to "optimize the fun out of the game", but once I figured I had to collect keywords, I went through all the locations clicking everything and only then started to piece together the story. Which is a shame because I wanted to be invested in exploring organically. But its not a negative, I just wanted to make you aware of more anxious playstyles i guess lol.
Also, being able to bring up the blackboard anytime instead of changing locations would disrupt less the train of thought, and maybe players would have less trouble solving it :)
Great job