Hello! I loved your game!
Please allow me to point out 2 bugs, both located in the 'maze' room. Examining the upper-left vent 3 times with English language leads to this:
And here's one with the leftmost box in the middle. When examined 2 times the text is incorrect for the English version!
(also, I'd be very grateful if you could give a hint to solve decryption.txt)(I'm really bad with puzzles.)