The Challenges scene is found in the Vault section of Smash Brothers Brawl. At first it will just be a huge row of empty boxes. When you unlock a challenge, it will open that box and give you the prize contained therein. It will also show you a hint to opening the boxes to the right and left of it. Most of us will only unlock a challenge by accident, but by sharing all of our information with each other, we can get access to far more information. ;
Every man dies, but few truly live. Live your life to its fullest, every day as if it were your last.