Here is the full list of all 10 Fibbage achievements worth 1,000 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox One.
Play a full game with 8 players
Fool every other player with a Lie in a 3+ player game
All players find the truth on a question
Write a Lie that's actually the Truth
Win the Thumbs Cup
Use the "lie for me!" button to enter a lie
Enter the same thing as another player
Trick someone with one of your Lies
Enter a Lie
Play through all the questions in the game