Here is the full list of all 20 The Jackbox Party Pack achievements.
Win all Wrong Answer of the Game prizes
Play a perfect round
Play a game with 10 or more players
Enter one of the 7 bugs' secret names as your name
Win three rounds in a row
Play a perfect round where all words get accepted
Type the word "nugget" and get it accepted
Play a full 8-player game
Win three games in a row
Guess every drawing correctly in a game
Enter the same thing as another player
Get all questions right in an episode
Ace a DisOrDat
Come from behind to win during the Jack Attack
Fool every other player with a Lie in a 3+ player game
Win a game by more than 3000 points
Draw something that everyone guesses correctly
Fool every other player with your title of another player's drawing
Write a Lie that's actually the Truth
All players find the truth on a question