Here is the full list of all 31 Run!ZombieFood! achievements.
Get a great partner-Big sword knight
Killed 5 bosses
Get 45 characters
Get a great partner-Cat woman
Get a cook
Killed 3 bosses
Have more than 1500 bullets
Killed 2000 zombies
Have 15 top-level characters
Get 30 characters
Get a great partner-Da da da
Get a soldier
Get a great partner-Sledgehammer
Have more than 1500 servings of food
Get a Courier
Get a Brawny
Have 5 top-level characters
Killed 1000 zombies
Have more than 800 bullets
Killed 1 boss
Have more than 800 servings of food
Get a doctor
Killed 100 zombies
Get 10 characters
Get a dog
Get a Old hunter
Get a Home Boy
Killed 10 zombies
Get a nurse
Get a Police