Nice!
Graphics: Decent, but the same as always. The animation is way better, but I'd have preferred if you gave Moovlin a facelift or something. No matter how well animated he is, he's just a bunch of squares. Still, you did a good job putting everything together... This one has a nice professional layout. You should've set the registry point to the side on the health bars, though.
Sound: Voiceovers were decent; in a different release I couldn't hear them for crap. Better quality, too. The musical score was pretty nice, and the sound effects were good. One thing was that the only 'getting hurt' sound effect was the electric buzz. I refuse to believe that getting hit with a spiked barrel creates an electro-magnetic force around me that jolts my health by 1/5.
Gameplay: It was decent, but lacked a bit. You need in-depth enemies, with a bit more health, like your bosses. Maybe some generic enemies too that don't follow patterns, especially something that'll follow you around. I didn't like the backflip move, since you couldn't move left or right during the flip. This ate up a lot of my time. The gameplay was also pretty brutal; fall once and boom, no leaderboard for you! It was strange seeing Moovlin as more of a race level... It's not even an RPG anymore, really.
Overall, this was pretty good, but seemed to lack something. I guess that's why it's a demo. Add more enemies, with different abilities. It would also be pretty good if you could make a leveling system so you could train your health and damage.