Full list of all 46 State of Decay achievements worth 600 gamerscore. It takes around 20-25 hours to unlock all of the achievements in the base game.
The base game contains 30 achievements worth 400 Gamerscore, and there are 2 DLC packs containing 16 achievements worth 200 Gamerscore.
Escaped Trumbull County.
Got killed by zombies.
Built one of every type of facility.
Maxed out a community member's Cardio skill.
Sacrificed your life in a blaze of glory.
Got 15 people in your community.
Built 8 outposts.
Earned 500 Fame.
Completed 50 missions or activities with the same character.
Found out what the Army was up to.
Performed a hand to hand double kill special attack.
Killed one of each freak zombie type with your car.
Helped the Wilkersons resolve their differences.
Killed 3 zombies with an exploding propane tank.
Relocated your home base.
Saw things through at the courthouse.
Earned a skill specialization for one of your community members.
Destroyed 5 infestations in one day.
Killed one of each freak zombie type.
Played matchmaker for Quentin and Becca.
Killed a member of your community to prevent them from turning.
Built a facility.
Ran over 250 zombies.
Destroyed 10 hordes in one day.
Distracted zombies to complete an objective.
Convinced another enclave to join your community.
Used a car door to kill a zombie.
Escaped Mt. Tanner and found the survivors at the church.
Completed a survey activity.
Got to the Mt. Tanner Ranger Station.
Go Out in a Blaze of Glory (Breakdown Level 1 or Higher).
Kill 5 Bloaters (Breakdown Level 2 or Higher).
Perform 50 Zombie Executions (Breakdown Level 3 or Higher).
Collect 150 Resources (Breakdown Level 4 or Higher).
Destroy 5 Juggernauts (Breakdown Level 5 or Higher).
Execute 50 Stealth Kills (Breakdown Level 5 or Higher).
Reach Breakdown Level 6.
Unlock All Heroes.
Kill 100 zombies with Drone Strikes.
Deliver 6 rucksacks to your base in the back of a single vehicle.
Survive 10 sieges on your base in a single playthrough.
Survive 2 minutes within a Danger Zone.
Send an energy drink flying.
Complete all Sasquatch hunting missions.
Survive detonating a nuclear device in Danforth.
Escape Danforth with Vienna Cho in your community.