User blog comment:Naty Ranmaru Sawada/Inazuma Eleven GO Galaxy Supernova/Big Bang Recruitments/@comment-24266509-20140124191332/@comment-4436931-20140125003025

It's the Hover Rally Silver Medal, which is 40,000 points. Also, remember that even though you get the achievement, you have to open the achievement list for the game to actually recognize that you got it