Enjoyed this a lot! The puzzles were pretty challenging but not unfair. And the atmosphere created was also really well done
I love how you handled the final decryption puzzle. It's pretty close as to how actualy decryption works. In fact I think you can implement some sort of "decryption key" puzzle instead. Where instead of figuring out the letters. You have to find the letters in the file system which creates the key
Overall had an amazing time playing! Looking forward to your next game!