I have the same complaints as others have pointed out: guy moves too fast and sometimes pushes stuff too far and no undo button. I also have to complain about the level where you need to get gears 7 and 8. I found an alternative way of solving the room than the walkthrough showed and the beam didn't break the green pillar (I don't know if the beam crossing over itself had anything to do with it, but it should be pointed out).
Still, it was an interesting game, but nothing extremely new except for the upgrade system for this type of game.