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