2010 FIFA World Cup
44 Achievements
1000
2 Button Mentor
Play and win a co-op game where at least one user is on 2 Button Controls. Details for this achievement will be revealed once unlocked
10
How to unlock the 2 Button Mentor achievement in 2010 FIFA World Cup - Definitive Guide
OlympiakosNYC
Start an kickoff with a 5 star team against a bad team. Set both controllers to the 5 star team and have controller 2 be set to 2 button control. Score a quick goal and just hold the ball. You can also do it on penalty Kick mode.
daenius
Start a game via "Penalty Shootout" from the Main Menu, make sure you have a second controller plugged in and move both controllers over to your preferred team.
Then press 
on any controller to open the controller settings, press either 
or 
to get to the controller layout screen.
Scroll up and change the preset to "2 Button". Whichever controller you did this with, this one will be on 2-button controls now.
Win the shootout and the Achievement will unlock.