For the piano and other bosses, just jump right before you hit the rocks. the rocks will send you up and the boss will catch up to you. I beat all the bosses without using a boost.
haddock chase is now TOO easy. Very nice game though. beat it 100% and FUUUU- at the ending!! on the piano level it caught up and put me in second but i kept going and was able to get the achievment lol
If I got stuck on a level I would open a new tab in my browser and load a really big file. The game would lag and glitch causing most of the shapes to fly off the screen. I could then beat the level with ease. You might want to fix that.
 "Doodle God"){kind=icon}
 "Run"){kind=icon}
 "CycloManiacs"){kind=icon}
 "Multitask"){kind=icon}
 "colorfill"){kind=icon}
 "GeoSketch"){kind=icon}
 "Achievement Unlocked"){kind=icon}
 "Sola Rola - The Gravity Maze"){kind=icon}