This game was such a treat. I echo all the good things everyone has said.
One note - early on, you can get prompted with the "The Pirate Captain" dialogue section (where Delphine calls Armand and has him translate the distress call) BEFORE actually unlocking the scene where the distress call occurs. I imagine the assumption is that most players will have gone through the study scenes and seen echoes with the telephone, but I personally did not solve it that way and was confused about what she was referring to since at know point had I encountered anyone speaking Malay over the phone.
Otherwise, this game is perfect and toes a brilliant line of being just challenging enough to keep you engaged without being frustrating or causing you to get stuck and lose momentum. Can't wait for the sequel.