I'm not very familiar with sonic 2 or the source, but it sounds like a great track. I like the overall direction of your remix. In its current state, I found that the synth sound that starts at around 1:10 feels a bit buried. I'm enjoying the percussion in the track, but found that it was a bit buried in a few places. As far as the arrangement, I found that some of the transitions were a bit sudden, for instance the intro into the first section at :06 seemed a bit sudden to me. Overall really like the direction.