Very polished game. Great job!
Didnt find any bugs or didnt really have any big issues with the mechanics. At some point a mirror I was supposed to be aiming at was kinda hidden out of frame, but I think thats kinda part of the puzzle so it doesnt get too easy.
Allready plenty of levels. Only thing you might consider adding is some story. Allso a short break from the mirrors every now and then might be refreshing even if its just a slightly longer walk at the next level.
Great submit overall! Good job!