I had started a run of this a while ago but gave up due to desync issues, so I'll just note the couple things I noticed (I only made it as far as the end of heck)
1) At the very beginning, it's faster to take a hit on the spikes and bounce to the right than grab the chain and walk right
2) As nifboy said, the first boss can be done faster. If you position yourself just right, you can whip the boxes three times in a row without have to move forward, or at least shoot it for the third hit.
3) For Andy Asteroids, I say either grab *all* of the blue dots, or none. When you grab just a few, it looks really half-assed.
4) You miss some *huge* shortcuts in Heck. Here's a movie of up to the end of the gems in Heck, there's no "record from now" so everything up to Heck is still yours.
http://abharrie.misterdotnet.com/EWJ.zip
5) When you have nothing to do, do nothing. At most, just get yourself into position so you're ready to do the next thing quickest. All of the jumping and whipping randomly makes it look like you're having a seizure.
6) I haven't watched anything past Heck, but since there's already those big of issues, I wouldn't suggest submitting it.