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