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