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