Easy Emblems as Knuckles
If you are having trouble getting the 1 minute emlems as Knuckles, here is a trick that will make it much easier. Find the first emerald shard, but don't touch it! Instead, pause the game and restart the level. Now run to it as fast as you can. Since the shards act as save-points, find the next one and repeat. Do this until you have all three.