Scott Pilgrim vs. The World: The Game contains plenty of secrets. Perhaps the most concealed one is being able to use Mr. Chau and Mrs. Chau. So how exactly do you unlock this couple in the Playstation Network and Xbox Live Arcade videogame?
Step One: Making Mr. Chau Appear
Mr. Chau will appear on a random location on the world map. He shows up randomly after you cleared a world. In order to be efficient, beat World 3 over and over again as it is the shortest level in Scott Pilgrim vs. The World: The Game.
Step Two: Preparing for Mr. Chau
Even if you managed to unlock Mr. Chau on the world map, it is best to avoid him until you are completely prepared. He can deal significant damage if you have a weak defense. Therefore, you should boost up your defensive stats by buying items in the stores. The higher your defense is (the max is 100), the better your survivability will be for the upcoming fight. Moreover, you should also enter the fight with a few extra lives just to be safe.
Step Three: Fighting Mr. Chau
Mr. Chau is one of the toughest bosses in Scott Pilgrim vs. The World: The Game because his attack power is astronomical. Because of this, it is best that you should attack aggressively.
Block or evade his basic sword slashes and pound on him. Mr. Chau will eventually go off the screen to ready his special attack that has him gliding across the area. This cannot be blocked. Try to steer clear of the lines as they marked where he could possibly strike. If you see him coming your way, quickly sidestep of roll away. It is a good idea for you stay near the middle of the screen to give yourself some time to dodge.
Once Mr. Chau appears on the screen after his special attack, aggressively attack him again. Repeat the process and you will eventually beat and unlock Mr. Chau.
Step Four: Using Mr. Chau (and Mrs. Chau)
Mr. Chau is not a playable character in Scott Pilgrim vs. The World: The Game. Instead, he can be summoned randomly. When you press the R1 on the Playstation 3 or RB button on the Xbox 360, Mr. Chau will sometime show up and slash enemies on the screen. On some rare occasions, Mrs. Chau will also make an unusual appearance to harmlessly yell at the enemies. Congratulations on unlocking Mr. Chau and Mrs. Chau in Scott Pilgrim vs. The World: The Game.