pros: it is a nice game. i appreciate your work as a programmer more than anything in this, you have level selection, (Multiple levels) you have boxes being randomly generated, good job on that, you have good reflections (the mirror part) .
those are all very hard to make, so good job.
cons: the game should not have been ported to browser, browser resources are limited, so the frame rate was low.it was more of a bad thing porting it to browser. the mouse rotation should have been slower.
overall, good game, nice small tiny puzzle it was. but, having poor controls and having it on browser, made it too hard to play.
the game would have been much more enjoyable if not for these issues.
not a fan of puzzles but as i said, i can see your hard work in it, good job. keep it up.