Seems to borrow a lot from Super Meat Boy -- dense character, prominent saw blade hazards, control facsimile -- without bringing much else to the table. It mostly works well, but the liberal hit detection makes for some annoying "shoulda worked" dodge failures. I also oftentimes found myself stuck on corners of the environment.
I have to give credit to the game for being responsive and smooth, but there were some annoying issues that I wish were taken care of ("Can I jump with the Up Key? Oh, of course not, because that's still scrolling up and down on the browser page").
Also, you mention in your Author Comments that the lag "may be a Newgrounds issue." Bad form. Also not true. Don't throw under the bus the guys who are hosting your game, and advertising it on the front page, for free.