Close to the Sun

Sorry, I don't have a guide to pop this achievement, since it's kind of basic to complete. But what slowed me down was the coded message in one of the last rooms you can open close to the end of this level. There are papers posted all around this room that give cipher solutions to sixteen letters in a coded message (eight of the letters are not given, so you have to discern those yourself after completing most of the message.) on the desk in the center of the room. I warn you, do not waste your time decoding this cipher. It helps you in no way in this chapter, and I'm guessing the whole game. I wasted a good hour decoding it, and I'll give you the answer here so you can save at least an hour of your time. Here's what you get using the given cipher answers around the room (I'll leave underscores for the letters that have no given answers around the room):
OH __
GOD_ YOU
A_TUALLY
D_D _T_
_OU AR_
TH_ B_ST
_NJO_ TH_
R_ST OF
__OS_ TO
TH_ SUN


As you can probably guess, the full message is "Oh my god! You actually did it! You are the best enjoy the rest of Close to the Sun"


See? Waste of time. This message obviously has nothing to do with completing the game, at least this chapter, as I found no other need for the cipher solution around this chapter. And the letters without cipher answers around the room are nothing special. For the sake of completion, in order, they are: MY CTIYEEEEYEECLEE.
I hope I saved you some time by not wasting it trying to decipher this worthless message!