Much of the level is pretty easy. If you're referring to the blocked off section containing only a barrel, the trick is to stand on the barrel and press UP and DOWN on the D-pad to shift the weight of the barrel, then jump off at the bottom. This has caused a large amount of frustration within the Sonic community since the game originally came out. Regarding the boss, when he drops the ball, hit him from below between the green conductors, without hitting the ball. When he makes it over to the ball, his conductors will start spinning and you need to run to avoid being pulled in. When he drops down to pick up the ball, hit him a couple of times, then repeat the pattern. The ball will never drop straight down, it'll go to the left/right and bounce a little, giving you more time to hit Robotnik/run away. After 8 hits, you've won. Or if you already have 7 Chaos Emeralds and are Super Sonic, just go straight in and hit him.
You must be talking about Carnival Night Zone. I've had the same problem. All you have to do is find your way through. When you get that specific room with the barrel all you need to do is press up and down but don't press it up and down too much or you'll get squashed!
He Remixed Lotso Zone Music So She Made.Bad(Hydrocity(Act 2)+(Launch Base Zone) Smooth Crimeanl(Icecap)Jam(Carnival Night).
Casino Night Zone.
Compete Carnavil Night Zone
It is an extra for pre-ordering it
the Sonix X zone - it is check Sonic (disambiguation)
No!!!!!!!!!!!!!!!!!!
If you are talking about dimensions there are so many different kinds of Sonics. In Mobius there is Prime Sonic. In Sonic X there is the Sonic X Sonic. If you read the Super Sonic Specials #10 you will see that Under Sonic and Prime Sonic fight Evil Sonic. Prime Sonic travels through dimensions by Zonic (Zone cop).
Metropolis Zone
Mushroom Hill Zone.
Sky Sanctuary Zone
As far as I know, I don't think there's a Green Hill Zone in Sonic Unleashed.