In "A Road to Nowhere," find all four diamonds.
The first diamond is a second pillar with the spikes and a ladder on one side. Climb up and then jump the platforms.
The second diamond is right after the first flower the treadmill will go below a platform. On the other side, spin to destroy the boxes and reveal a jump pad. Go to the right for the diamond.
The third diamond is from the checkpoint, instead of following the main path, go left to find a jump pad and then go right and jump over the spikes.
For the fourth and final diamond, continue the path until you see a bee on a higher platform on the left side of the path. Let the platforms switch until you get a jump pad next to the bee's platform. Jump up and avoid the bee. Achievement pops when you pick up the last diamond.