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