Good animation but
Here is your grade my good fellow.
Visuals: 8. The cut scene animations were not all that great and the actual game play animation was better than the cut scenes. That usually isn't the way things should work out. The game play animation was fluid, but the colors made it hard to see certain objects you jumped over in the last level.
Sound:7
I love 8 bit music and Midi but I probably would have found the sound extremely annoying if this game was any longer. Also, the only sound in the game seemed to be the odd sound effect when you fall and the music. Maybe look into something a little more engaging and perhaps tweak the sound so that the music isn't louder than the effect volume. (unless there was a slider or something I missed)
Gameplay: 5
The whole side scrolling jump over objects thing has been done already and although you successfully achieved making a game, you didn't do anything original with it.
Story: 7
Such a short game, who really needs one? I'll be honest, making a story for this actually hurt it a bit. Seemed almost like you rushed the story together after programing.
Over all: 6
You started with something that could be an exceptional game if you spend more time with it and come up with a few original ideas. I mean, I don't know how to code for a game but you obviously show promise and could probably pull off a great game the next time around. :D