@C3PJoe said:
converting from hex to ASCII. No bueno. Any nudges?
That crossed my mind too initially, but you’re over complicating it. Notice the structure of the zip file in front of you. There is a folder for each digit [0-9], for each lowercase character [a-z] and for each uppercase character [A-Z]. Some of these folders contain a file, some do not…
This is a pretty big hint, bordering on spoiler territory.