Successfully complete the indicated task to unlock the corresponding sticker:
Boo from Mario Tennis: Hit over 900 feet in the Home Run Contest.
Liquid Snake from Metal Gear Solid: The Twin Snakes: Defeat ten Alloys in Cruel Brawl mode.
Phyllis from Animal Crossing: Wild World: Successfully complete All-Star mode on the Normal difficulty.
Running Chibi-Robo from Chibi-Robo: Successfully complete Classic mode on the Easy difficulty.
Ryuta Ippongi from Duendan 2: Successfully complete the 100-Man Brawl with a time less than 3:30.
