Update: I forced the game to show the correct word for every time you get to put in letters. Maybe this could be used for the secret tape?
Download the file here: https://drive.google.com/uc?id=1PNBDgyJ_G2AHEH4tx6izO8Z42W8W01uh&export=download
Go into the Amanda The Adventurer_Data folder and place it in the Managed folder. Press Overwrite and restart/start the game. Every time it wants you to input something, it’ll show the word that is correct. You will need to type that word because all it does is show you not put it in for you.
I can’t test this as I’m on a Mac. I’m using virtualization to get dnSpy running but Amanda refuses to R U N