Fair enough on the songs. I still think it's important to look at your game objectively as your making it, as people playing aren't going to have nearly the amount of context that you do. When I start your game, enter the tutorial level, and immediately hear what sounds to be an audio watermark (I think it's saying "Audio Jungle"?) repeat every few seconds, I don't think "I'm being watched", I think "did this person use the wrong music file here?". It doesn't feel intentional. Maybe if it happened less often or was less noticeable it would work better?
I'm also assuming a lot of the story information you mentioned here is located in the google drive link in the truck level. I don't really know what you expect the player to do there, screenshot the text and then type it in character by character in their browser? Most people aren't going to go through the trouble of that for a jam game, and it makes it difficult to rate the game when a lot of necessary information is located outside of the game itself.
You clearly have a lot of ideas, and you enjoyed making this- which at the end of the day is what this is all about! I hope you understand that I'm just trying to be constructive.