Wow, thank you so much for playing! Glad that you enjoy my game. There are 6 notes in the game. Find all the notes and you will receive the password at the end of the game. All of the notes will spawn at certain scenes of the game and will disappear if you progress further without reading them. They are all pretty visible and nothing really crazy is required to find them. If you really can't find a specific note, feel free to DM me on Twitter or Discord as I don't want to get into spoiler territory here in the comments :)