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.
Sacrificed your life in a blaze of glory.
Earned 500 Fame.
Found out what the Army was up to.
Saw things through at the courthouse.
Maxed out a community member's Cardio skill.
Built 8 outposts.
Played matchmaker for Quentin and Becca.
Helped the Wilkersons resolve their differences.
Killed a member of your community to prevent them from turning.
Killed 3 zombies with an exploding propane tank.
Earned a skill specialization for one of your community members.
Killed one of each freak zombie type with your car.
Completed 50 missions or activities with the same character.
Built one of every type of facility.
Destroyed 5 infestations in one day.
Killed one of each freak zombie type.
Relocated your home base.
Ran over 250 zombies.
Distracted zombies to complete an objective.
Destroyed 10 hordes in one day.
Built a facility.
Convinced another enclave to join your community.
Escaped Mt. Tanner and found the survivors at the church.
Used a car door to kill a zombie.
Completed a survey activity.
Got to the Mt. Tanner Ranger Station.
Get 15 people in your community.
Perform a hand to hand double kill special attack.
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.