Very Clever, the whole idea reminds me of the shadow clones from Mario galaxy except these ones don't hurt you. Love the broadness and creativity with the different uses for the reflections all of gets explained very quickly in the first two levels alone.
From what I can tell this is your first game and it's impressive, would love to see this concept expanded upon I feel like there's a lot of interesting ways you could take this idea.
Keep up the awesome work, hope to see another entry from you in the future!