This is my first flash that I've considered good enough for Newgrounds. The levels start out simple and get harder as you progress. Every level in this game can be completed, even though some may seem impossible :P
My high score is 150 seconds to complete it all, but I've done every level at least 30 times so I've had loads of practice :P but try to beat me anyway! (without using any level passwords)
EDIT: A lot of people seem to be having trouble with level 4, it is a hard level but if you keep with it you can finish it without much trouble. There are a few tricks to it and once you figure out how to go with the flow it shouldnt be too difficult. Just make sure when you see a level password to remember it!