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