Not too bad
The gameplay was actually fairly good, the character was easy to control and it wasn't too easy or too hard. To be honest, a lot better than I was expecting.
The one major drawback was the choppyness of the audio. The songs switched too quickly and just using little clips made it sound really kinda bad, IMO.
I would try using some 8-bit style music for this, I think it would sound a bit more fitting, anyways.
Not a bad game, though.