Radical Highway: After going in one of the rockets look at the blimp to the left and he will be sitting on it.ģ. City Escape: About 3/4 of the way down when you're running away from the truck look on the right sidewalk to see him running away.Ģ. There are several places in SA2 that you can see Big the Cat from Sonic Adventure. Once you have this it makes it possible to find the Lost Chao. | Submitted by Travis You have to be fast underwater or you'll die. To get Knuckles Air Necklace, you must go down the tunnel with a ghost warning sign and a spring at the bottom. Tip: Planting Seeds in the Chao Garden.