Guide to Finding the Hidden Flag and Unlocking the "Flag Finder" Achievement

If you'd prefer to find the flag on your own, it's best to stop reading now. But if you need a little help, follow these steps.

Head to the first world: Start in the game's first world.

• Go to level 10: Once you're there, make your way to level 10.
  
• Look for the central tree: In level 10, find the tree located in the center.

Follow these steps:

• Jump up to the middle tree.
  
• Collect the three jump boosts that are located just below the tree.
  
• Use those jumps to reach the nearby bridge.
  
• From the bridge, jump to the top of the tree.

At the top of the tree, you'll find the hidden flag that will unlock the "Flag Finder" achievement.
Use those jumps to reach the nearby bridge.
From the bridge, jump to the top of the tree.
At the top of the tree, you'll find the hidden flag that will unlock the "Flag Finder" achievement.