Sonic Lost World Red Star Rings guide

Frozen Factory: Zone 2

Red Star Ring 2: Almost immediately after the pool table, you'll find the second Red Star Ring hanging over a square-shaped hole.

Red Star Ring 3: The third is clearly visible on the right side of a small area where you encounter one of the first crabs.

Red Star Ring 4: When you come to a large fork with a monster on the right side, take that path, knock the monster over the edge, and jump over a couple of platforms to reach the fourth Red Star Ring.

Red Star Ring 5: When you hit the second billiards-themed area, knock all of the balls into their holes once again. It requires much more maneuvering this time, and be warned that you'll forcibly hit a checkpoint at the end of the sequence, meaning that if you miss any of the balls, you'll have to start the entire level over.