invisible boxes (glitch)
First of all: nice game. But without the one single glitch it would have been a GREAT game.
You made it so that Parker could stand/balance on the very edge of a cliff, which is a good thing. But in order to manage that, you added almost a full box-length of an invisible brick to each cliff. That wouldn't be so annoying if it wasn't impenetrable from the lower side. It makes stages 19 and higher really really frustrating.
One other thing that bothers me is the Newgrounds-logo always lurking in the background. I sure LOVE Newgrounds, but it's a little distracting...