2010 FIFA World Cup
44 Achievements
1,000
Xbox 360
2010 FIFA World Cup™ Fever
Challenge and defeat someone with this achievement in the Online FIFA World Cup™. Details for this achievement will be revealed once unlocked
10
How to unlock the 2010 FIFA World Cup™ Fever achievement in 2010 FIFA World Cup - Definitive Guide
This is a viral achievement, meaning that each player who has unlocked it will automatically spread this to anybody else he is playing from the moment he unlocked this Achievement.
Just keep playing "Online Fifaworldcup" and eventually you will run across somebody who has this Achievement.
Beat him and the Achievement will unlock.