I had the massive lag that everyone here is commenting on as well at first. I then changed to local storage to unlimited and that reduced the lag to just spike when a level started and it plays fine afterwards. + this if it helped ^_^
[[SPOILER]] Everyone sees this differently, mine view is the following. For ease of typing I will call the man John. Each level is a different time the psych visits John with obstacles being the psyche's attempts to bring John back around to sanity. Though he tries his hardest to stop John, John always finds himself back at the green box which represents the incident of the murder. Bringing him further and further away from reality, the rise in difficulty brings a perfect image to this with the many gaps to cross and heights to climb. However these gaps become smaller and easier to traverse after he remembers his time with his wife and how much he loved her. Showing that there was indeed progress in his situation, and right at the end of the game when you cross that final gap...the psych leaves.
A simply amazing game, by far the best on Kongregate
just use the sniper glitch.get the chainsaw and click it a couple of times while pressing space bar.then stop clicking and press space bar to change to the hunting rifle.gives you 99 rounds,makes headshot achievement so much easier
 "Not Your War"){kind=icon}
 "The Company of Myself"){kind=icon}
 "Kongregate Chat"){kind=icon}
 "JamLegend"){kind=icon}
 "The Last Stand"){kind=icon}