I dislike the graphics but that's more of a stylistic cohesion thing rather than me thinking they lack in quality. The music fits well though and the animations, save for the title screen where as Wolsk says the background moves in the wrong direction, are good. I'm not sure what exactly the animation after the title screen was trying to portray though. Overall though it's impressive, so well done :~)
Some improvements I would suggest:
- Slice the title background into horizontal strips and have them on different background layers moving at different speeds to generate a parallax effect. The way the graphic you've chosen presents roads has no perspective at all and it ruins the illusion of it being a landscape rather than a flat picture behind the kid, parallax would help a lot.
- Tidy up the title logo a bit. I don't think it looks terrible but imo it doesn't look great. It looks out of place because it's in a messy style which contradicts the straighter more precise style of the other graphics in the intro and on the title screen. Again it goes back to me not liking the graphics, or to be more specific the way there's a lack of unifying style. There's a mixture of scaled up pixel art and pixel art presented in its original size; flat block colouring and gradient shading; precise angled lines and messy line art.