Full list of all 72 State of Decay: Year-One achievements worth 1,500 gamerscore.
The base game contains 40 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 32 achievements worth 500 Gamerscore.
Escaped Trumbull County.
Crafted ammunition 5 times.
Invited a community member to follow you 10 times.
Maxed out a community member's Cardio skill.
Sacrificed your life in a blaze of glory.
Intercepted 5 mysterious supply drops.
Killed one of each freak zombie type with your car.
Killed 25 zombies with incendiary shotguns.
Got 15 people in your community.
Got killed by zombies.
Earned 500 Fame.
Found out what the Army's up to.
Built one of every type of facility.
Helped the Wilkersons resolve their differences.
Invited a community member to follow you.
Built 8 outposts.
Killed 3 zombies with an exploding propane tank.
Saw things through at the courthouse.
Performed a hand to hand double kill special attack.
Maxed out a community member's Shooting skill.
Played matchmaker for Quentin and Becca.
Killed a member of your community to prevent them from turning.
Fixed delicious snacks 5 times.
Completed 50 missions or activities with the same character.
Maxed out a community member's Wits skill.
Killed one of each freak zombie type.
Relocated your home base.
Ran over 250 zombies.
Destroyed 5 infestations in one day.
Intercepted a mysterious supply drop.
Distracted zombies to complete an objective.
Destroyed 10 hordes in one day.
Maxed out a community member's Fighting skill.
Earned a skill specialization for one of your community members.
Built a facility.
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.
Made it to the Mt. Tanner Ranger Station.
Reached Breakdown Level 6.
Unlocked All Heroes.
Earned 25 Headshot Streaks at Breakdown Level 4 or Higher.
Executed 50 Stealth Kills at Breakdown Level 5 or Higher.
Destroyed 5 Juggernauts at Breakdown Level 5 or Higher.
Reached Breakdown Level 5.
Completed All Research Projects at Breakdown Level 1 or Higher.
Collected 150 Resources at Breakdown Level 4 or Higher.
Destroyed 5 Ferals at Breakdown Level 3 or Higher.
Reached Breakdown Level 4.
Burned 100 Zombies with Fire at Breakdown Level 2 or Higher.
Performed 50 Zombie Executions at Breakdown Level 3 or Higher.
Reached Breakdown Level 3.
Went out in a Blaze of Glory at Breakdown Level 1 or Higher.
Destroyed 5 Bloaters at Breakdown Level 2 or Higher.
Reached Breakdown Level 2.
Escaped Danforth with Vienna Cho in your community.
Survived 10 sieges on your base in a single playthrough.
Survived detonating a nuclear device in Danforth.
Killed 100 zombies with Drone Strikes.
Successfully extracted Dan Bogatz.
Completed all hunting missions with Sasquatch.
Successfully extracted Michele Martin.
Successfully extracted Timothy Hall.
Survived 2 minutes within a Danger Zone.
Successfully extracted Hadley Westen.
Brought Eldridge to Black Friday, but he won't leave.
Successfully extracted Madison Grant.
Sent an energy drink flying.
Successfully extracted Julene Horn.
Delivered 6 rucksacks to your base in the back of a single vehicle.
Brought Thomas Horn to the Landing Zone, at least.