Here is the full list of all 10 Fibbage XL achievements.
Play through all the questions in the game
Win the Thumbs Cup
Enter the same thing as another player
Play a full game with 8 players
Trick someone with one of your Lies
Write a Lie that's actually the Truth
All players find the truth on a question
Fool every other player with a Lie in a 3+ player game
Use the "lie for me!" button
Enter a Lie