Here is the full list of all 46 Anthem achievements worth 1,000 gamerscore. It takes around 60-80 hours to unlock all of the achievements on Xbox One.
Complete all Bastion Collectibles challenges.
Complete tasks to aid the Freelancer cause.
Complete a mission, contract, or stronghold with a masterwork javelin rarity.
Complete 12 Interceptor Gear I Challenges
Complete Matthias's Riddles of Raban Maur story.
Complete tasks to aid the Sentinel cause.
Complete tasks to aid the Arcanist cause.
Complete 12 Colossus Gear I Challenges
Complete Yarrow's Shallow Grave story.
Complete Part 2 of Brin's Need to Know story.
Complete Return to the Heart of Rage.
Complete 3 Grenade Launcher I Challenges
Complete Freelancer Down.
Complete Matthias's Triple Threat story.
Complete a mission, contract, or stronghold with an epic javelin rarity.
Complete 12 Ranger Gear I Challenges
Complete Dax's Emerald Abyss story.
Complete 3 Sniper Rifle I Challenges
Complete The Fortress of Dawn.
Complete 12 Storm Gear I Challenges
Complete The Tomb of General Tarsis.
Complete 3 Heavy Pistol I Challenges
Complete a mission, contract, or stronghold with a rare javelin rarity.
Discover all districts, landmarks, and hidden places in Fortress of Dawn.
Discover all districts, landmarks, and hidden places in Ruins of Shadowmark.
Discover all districts, landmarks, and hidden places in Monument Watch.
Discover all districts, landmarks, and hidden places in Emerald Abyss.
Discover all districts, landmarks, and hidden places in Great Falls Canyon.
Discover all districts, landmarks, and hidden places in High Road.
Discover all districts, landmarks, and hidden places in Valley of Tarsis.
Discover all districts, landmarks, and hidden places in Eastern Reach.
Complete 3 Autocannon I Challenges
Discover all districts, landmarks, and hidden places in East Gate.
Discover all districts, landmarks, and hidden places in Academy Ruins.
Complete 3 Marksman Rifle I Challenges
Complete 3 Machine Pistol I Challenges
Complete 3 Light Machine Gun I Challenges
Complete 3 Assault Rifle I Challenges
Complete 3 Shotgun I Challenges
Complete Yarrow's Keeping Promises story.
Complete Part 1 of Brin's Need to Know story.
Complete Finding Old Friends.
Complete Matthias's Search for Knowledge story.
Complete a mission, contract, or stronghold with an uncommon javelin rarity.
Complete Incursion.
Complete Early Warnings.