Thanks for the feedback! I couldn't really communicate what you're supposed to do very well because of time issues; the game should be more clear. I would actually reduce the hitboxes or something, even I get hit often by them. The debris are the things you collect to craft the items, so more of them is better; again, it could be more clear.
If you want to replay the with sounds, the download version works, Unity is just bugged for web(I spent 2 hours trying to fix it, nothing worked).