Here is the full list of all 11 Zombie Party achievements.
Play Zombie Party for Twelve hours! Go Home!!!
Play Zombie Party for six hours! Keep going!!!
Eat 69 Cheeseburgers!
Die 15 times!
Um... yeah.
Gotta blow 'em up!
Have 25,000 gold in your player account!
Shoot 10,000 Bullets!
Have 10,000 gold in your player account!
Play Zombie Party for one hour!
Hop around until something happens!