Sonic 2 was STUPID difficult compared to the other Game Gear Sanic games.

Dynamite Headdy was stellar for its time, too.

Glad to know it wasn’t just me. The extremely tight screen space did not help things
The first boss with the balls was like HOW ARE YOU LIKE WHY STOP
I think it’s the 4th zone, the 3rd area involves a bunch of spring jumps into the void just to get to the boss. No clue why I spent the time to memorize that level, but I did.