The puzzles were alright (if rather easy) but it would benefit from greater variety in that area: the level with two dogs crossing the corridor is functionally the same as the one with only one dog; the level with four dogs circling is the same as the one with two circling. The need to press W for each new placement of the laser is also somewhat irratating (and can be buggy if trying to perform actions in quick succession), so allowing it to be controlled entirely by left clicking would likely make the gameplay a lot smoother.