Hi! This is an incredibly thorough breakdown of your experience with Flux. Thank you for the feedback!
I'll sit down tonight and fix the typos you caught and add additional sfx. There should actually be a walking sfx but it may be muffled or broken for whatever reason. Either way, I'll give it a look. I have a few ambient bits to add for sure.
Difficulty-wise, Flux was always meant to be a very chill, no-challenge experience. I could spend years building each minigame into a full-fledged experience complete with challenges and bosses and so on, but that simply wasn't the goal. I get it, though! I'm happy to see people find something in these little snippets and wanting more.