Here is the full list of all 28 Party Panic achievements.
Play a game online.
Play 10 games.
Play 100 games.
Win 10 games.
Win 100 games.
Win 5 games.
Accumulate more than 100,000 total points.
Accumulate more than 1,000,000 total points.
Play a perfect game, getting 1000 points in every minigame.
Drink after every minigame for a full game.
Play your first game.
Play a local game with 3 other friends.
Find and return the Race trophy to the Hall of Goobers.
Find and return all the trophies to the Hall of Goobers.
Find and return the Treetops trophy to the Hall of Goobers.
Find and return the Ghost trophy to the Hall of Goobers.
Find and return the Chicken trophy to the Hall of Goobers.
Find and return the Arena trophy to the Hall of Goobers.
Complete the Gauntlet without dying.
Die a total of 100 times in The Gauntlet.
Find and return the Mountain trophy to the Hall of Goobers.
Find and return the Throne trophy to the Hall of Goobers.
Find and return the Pizza trophy to the Hall of Goobers.
Find and return the Ring trophy to the Hall of Goobers.
Find and return the Gem trophy to the Hall of Goobers.
Find and return the Cave trophy to the Hall of Goobers.
Find and return the Maze trophy to the Hall of Goobers.
Get the couch out the front door.