Very, very good.
It has a bit of a rough sound to it, but it's very enjoyable overall. If you ever decide to redo it, though, you should lower the volume at certain points (it gets too loud once in a while) and eliminate the fuzz.
Reviews for "S3 | Metal Madness"
Good.........
But that is not Sonic 3 it is Sonic and Knuckles Sky Sanctuary Act 2 for Knuckles.