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