A little bit glitchy, as half the time i could not shoot the cigarettes when I was as steady as possible. I think the game should be a little bit harder, even with the annoyingly ignorant people who put walkthroughs up, and I think the game deserves a 3/5, after all it may not have upgrades or points to buy things with, but it is kind of fun for the moment, and replay able, at least to me.
As I said before its a great game. But there are some glitches that make you want to smash your fist through your monitor (like, say, if you got to level 3 on normal with no deaths and filled to the brim with boss weapons)!
 "Color Infection"){kind=icon}
 "Red"){kind=icon}
 "Casual Gameplay Escape"){kind=icon}
 "Shift 3"){kind=icon}
 "The Several Journeys of Reemus: Chapter 1"){kind=icon}
 "The Necronomicon"){kind=icon}
 "Scope: First Blood"){kind=icon}
 "Bowmaster Prelude"){kind=icon}
 "Ether Cannon"){kind=icon}
 "Papa Louie: When Pizzas Attack! - Kongregate Version"){kind=icon}
 "The Last Canopy"){kind=icon}
 "Jumpcat"){kind=icon}
 "Four Second Fury"){kind=icon}
 "Runescape"){kind=icon}
 "Dog Eat Dog"){kind=icon}
 "Bubble Tanks 2"){kind=icon}
 "The Fancy Pants Adventures"){kind=icon}
 "Age of War"){kind=icon}