There's something here, a la some The Witness puzzles, to navigating maze spaces with two versions of your character. But I'm sorry to say that there are just too many rough technical edges to love it the way it is right now. The menu select screen, the pop-up instructions, and even the movement didn't always quite work as I expected.
Gameplay-wise, I liked the addition of the laser, but if my character is always invincible, it's hard to see a reason I'd ever want to use it instead of running head-on into my mirror. I'm glad you explored this, though, and I would be curious to see what else you could develop if you went deeper!