This one can be a pain in the ass. I have 2 friends who have this game. The first one already played the game, and I was able to go to the online menus and issue a challenge, which got me this achievement. The reason I bring this up was because a second friend purchased the game so we could play it together and we weren't able to send each other a match request.
It seems to be able to issue a challenge to a friend, they can't just have the game in their library. They have to at least play a game before you'll have the option to challenge them.