>What was the most frustrating moment or aspect?
The range needed for gathering stuff wasn't clear to me despite the box that appears to be the pickup zone. I'd go an mash E on a shelf/thing that seemed to be glowing or seemed to have things on it, but nothing would appear to happen half the time and/or I'd go through the shelf.
>What was your favorite moment or aspect?
I don't think it was intentional, but worming my way through walls was entertaining.
>Was there anything you wanted to do, but couldn't?
I wanted to spend or use what I'd gathered, but couldn't figure out how.
>If you could change, add, or remove any 1 thing, what would it be?
I'd add an enemy or impediment. You could make an infinite loop out of what you have with a constant impediment and the ability to get upgrades.