Here is the full list of all 42 Rebuild 3: Gangs of Deadsville achievements.
Kill 100,000 zombies cumulatively
Eat enough people to be considered evil cannibals
Finish any city on Hard difficulty
Finish any city on Impossible difficulty
Fully infect the Dahlias with your cultists
Discover the true origin of the disease
Equip 10 animals
Become Gustav's friend and get his special deals
Equip every survivor with a gun
Complete the Gangs of Deadsville questline
Finish any city by day 50
Complete the final scenario city
Have 365 food at once
Complete every research project
Have 100 survivors at once
Use 50 bath salts in one game
Complete the Return to New York questline
Repair an airplane and fly away
Equip a Rocket Launcher
Reclaim the entire city
Destroy every faction on the map
Have a survivor with 10 in every skill
Have 5 hospitals, 10 medkits, and 100 medicine at once
Light off Fireworks
Get any survivor to defense level 20 (includes equipment)
Declare peace with a faction
Have 50% of survivors become cultists
Complete the Pig Farmer questline
Generate a surplus of 50 food per day from farms
Find 100 items while scavenging cumulatively
Kill 10,000 zombies cumulatively
Destroy any faction
Be allies with every faction in the city
Produce 100 items in the workshop cumulatively
Become allies with any faction
Fix a Power Plant
Finish any city on any difficulty
Complete scenario city 1
Get any survivor to level 10 in some skill
Build a City Hall
Kill 100 zombies cumulatively
Kill 1000 zombies cumulatively