Thanks for the constructive feedback!
For point 3: That's one of those things I should have addressed. I used the time crunch as an excuse to ignore it instead of addressing it and using it as an inspiration. I could have used the drop-mechanic-idea to save the coins from the spikes for example.
For Point 4: I NEED to LEARN to test in WebGL more often, I didn't bother testing until I posted. I kept playing and testing in Play Mode.
And overall, I need to learn to be even more flexible with my game. I was worried about trying to keep to my original idea I drew up Thursday/Friday. I got stuck in that idea instead of just making due with what I had.