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