Great implementation of the theme, the mechanics is interesting.
Some effect that represents the reflection or something like that should be added, simply saying "YOU" and "REFLECTION" is not enough, the same happens with the instructions, it is difficult to understand at the beginning that everything goes, you must lose several times until be clear, and the same, a section of "HOW TO" in the title screen is not sufficient.
Something important to polish are the art, the player just being a line and a circle makes it difficult to understand that you have to protect him, or at least, what you're controlling. The power up's icons may be more clears, for exaple, the "freeze" icon not seems like an snowflake.
One bug is that you can go past the lower limit of the screen and exit the stage.