People are having problems with this achievement.
Description of it is easy - You just need to go to leaderboards of the game, and achievement pops out.
But sometimes this bug appears which prevents you from getting the achievement by "Connection error" message.

This only happens if you have more than 100 friends.

How to solve it? Easily -

1. step - Go to the "Friends" page
2. step - Mark all friends excluding friend who plays the game
3. step - Block marked users
4. step - Go to "Leaderboards" page in the game
5. step - Achievement earned
6. step - Go back to "Friends" page and mark all users
7. step - Unblock them!

Done! Everything is as it was before + you got the achievement.

Good luck, do not forget to rate this guide and of course enjoy the game :)
PS: If you do not have nobody who plays the game, feel free to comment here or add me.