It was well done but missing many things.
This is probably the best fan-made game remake in the world. It was drawn well, the music was good, and it is generally just a good and fun game. It's just missing heaps of things. For example, when you jump from a high height onto an enemy you get hurt and it doesn't die even if you're still in a ball. Also the gameplay is slower than it should be, sonic moves even slower than he does in the very first one (when he is badly drawn, cant spindash etc..). Knuckles doesn't have his special ability to glide like he does in sonic and knuckles. After playing the originals this game seems like a real let down, all i'm saying is, you based it more as if it was a remake of the newer gameboy one. and you should make it more like the original where the bosses dont run and the charcters are faster.