|Hmmm...that Death Egg looks familiar.|
Using the barrels is not intuitive. Sometimes, even if you're 'using' them it doesn't work, and even when you are 'using' them, it can be hard to tell what you're doing is working. When I originally played this, my young self probably did not have access to any internet guides, so I was just stuck on that zone. It's too bad, because the ice cap zone turned out to be one of my favourites in the series. As Sonic, you get a classy little snowboard sequence!
Learn more at the Gaming WikiI forgot to mention it on the completion of Sonic 2, but the special stages are horrible. Same follows for Sonic 3. They both tried to be "3D", but just wound up being sloppy controlled 2.5D not-so-fun-I'll-just-skip-that bonus rounds. Acid-induced Sonic 1 bonus rounds are far superior. Needless to say I dropped the chaos emerald completion aspects for both Sonic 2 and 3.
Sonic 2 Bonus Stage
On to Sonic & Knuckles!