Congratz on figuring out the puzzle. You're about to face another puzzle but that one won't require outside knowledge... still, it will be very cryptic; Imagine piano puzzle v2.0 from SH1. I'm aware that this riddle difficulty will be unfriendly for players that don't know these specific methods/riddles but I still want this difficulty to contain riddles which require thinking outside the box. (meaning: hints are in the game but the solution requires outside knowledge or looking it up on the net if there's no one who shared their knowledge) Also that polybius cypher is called smitty tap code, and the name for it is in room 24.(or whichever room with the plush it is)
I appreciate your input and criticism. I will take it into account when/if making riddles for the full game. I am aware that not everyone will agree or like it, but this is how I'd like to make this game. (and if it's too difficult for players, the option to change difficulty levels will always be there; albeit with less extra content on easier difficulties)