If you want to connect your game to Facebook, follow these steps:
  1. Open the game
  2. Tap on the News icon on the right side of your camp
  3. Go to the Social tab
  4. Use the Facebook button in the bottom of the tab to connect your game to Facebook
or
  1. Open the game
  2. Tap on Missions in the bottom of your survivor camp, then Challenge
  3. Go to Highscores
  4. Use the Facebook button in the right side of the screen to connect your game to Facebook
You will now be able to claim gold for the corresponding achievement, as well as compare high scores with your Facebook friends!

Note that Facebook does not save your game, only connecting your game to your Game Center or Google Play account will save your progress. Check the instructions in our FAQ “How do I save my game?”