Spot The Differences - Hugo

Hugo is very much in need of your help. It's stuck at the border worlds, and now can not get out of this tricky traps old magician. The only thing that was able to find our hero, is the fact. that he needed the keys to the gates of SLR measurements, and can get them only one who can see through the prism of distorting mirrors that which is not in the space around us. This mystery will not be easy to solve!