I'm with @Firespike33 on this one - the concept is really cool, super creative and "unconventional" (Even though I found the use of that word in the introduction text a bit too "on the nose" haha). But the difficulty curve is quite steep.
I didn't really get why coins kill you, and so it took me some time to figure out why I kept dying in the beginning :D
Also I liked the music but the sound effects (especially the text in the beginning) were a bit too loud for my test
Overall - great job!