Thanks for the feedback!
Ya, controls/instructions seem to be the biggest complaint. It's actually intended to click and hold on each junk pile. So long as you are over the pile and holding, it will clear the whole thing after 10 seconds or so. But I only explained it on the game page description which doesn't seem to show up when doing the rating queue. I should have added an instruction button on the main menu along side the story and credits.
I loved the music too, but can't take credit for it. I have 0 skill in sound production, so grabbed free assets for music and effects. Both tracks are linked to in the credits and are CC0 so free to use for whatever if you want to grab them for a play list or something.