Here is the full list of all 20 The Jackbox Party Pack 6 achievements.
Win a game as the audience
Get all the votes in an old favorite
All players get a role without tiebreakers in a 6 player game
Win every matchup
You beat a joke that previously received unanimous votes in a 5-8 player game
Your definition gets all the player votes and 90% of the audience
Write a sentence in Round 3 that uses the entire character limit
Win all three rounds in a 3-5 player game
Use the phrase "mucus ranch" and win a round with it
The aliens win the game after a failed vote where they were properly isolated
Humans win with one second or less remaining on the clock
Aliens win without using hacks
Aliens win in under five minutes
Crack someone's password
You elect to perform every joke
Survive the game (and then some) while wearing Father's Hat
Everyone but you chooses you for a role
Get a consolation role
Get a role you doubled down on
Compete against a joke that previously received zero points