Breat game, but . . .
I love all the Submachines so far but I found a glitch in this one.
If you go to any area with the ciphers and don't pull them out before you go to the secret location, which you get at the end, you lose them forever and therefore this could prevent some people from getting all the secrets without starting all over.
Not really sure if that counts but it's there, but it is technically also user error.
Anyway can't wait for more.