Here is the full list of all 80 Horizon Forbidden West Complete Edition achievements.
Obtained 1 weapon from every weapon class.
Reached player level 30.
Equipped a weapon of any tier with 2 coils.
Followed Beta's distress signal and brought her back to base.
Drained Las Vegas and recovered POSEIDON.
Aided both Drakka and Yarra and chose the better candidate.
Inflicted every elemental state on an enemy at least once.
Defeated the outpost leader and recovered the tags from 4 Rebel Outposts.
Discovered and completed 3 Relic Ruins.
Completed 1 Survey Drone, 1 Black Box, 1 Relic Ruin, 1 Vista Point, and 1 Signal Tower.
Reached the Core of a Cauldron and accessed its information.
Detached 100 components from machines.
Reached player level 20.
Upgraded a Valor Surge to its maximum level.
Secured a base of operations and rebooted GAIA.
Fully upgraded 3 weapons.
Resolved all of the problems troubling the Daunt.
Completed all contracts at a Salvage Contractor.
Completed key objectives in 1 Rebel Camp.
Reached the top of a Tallneck and accessed its information.
Upgraded the Food Pouch, Potion Pouch, Resource Pouch, Trap Pouch, and any ammo pouch at least once.
Survived the ambush at the Embassy and gained passage into the Forbidden West.
Fully upgraded 3 different outfits.
Cleared the way to the Embassy and reopened the Daunt.
Arrived at the Daunt seeking passage into the Forbidden West.
Performed a stealth kill on 10 machines.
Obtained all Horizon Forbidden West Achievements.
Reached player level 50.
Defended the Kulrut and recovered AETHER.
Encountered the Quen and recovered DEMETER.
Survived Thebes and befriended the Quen.
Flew into battle and vanquished Regalla.
Put an end to the Zenith threat and discovered Nemesis.
Helped Kotallo build and test a mechanized arm.
Helped Zo reboot the land-gods to save Plainsong.
Helped Alva retrieve data to help the Quen.
Reached the top of every Tallneck and accessed their information.
Investigated all Rebel Camps and helped Erend defeat Asera.
Reached the Core of every Cauldron and accessed their information.
Earned at least a Quarter Stripe mark in all three trials at one Hunting Ground.
Earned at least a Quarter Stripe mark in all three trials at all Hunting Grounds.
Killed at least one of every type of Acquisition machine.
Killed at least one of every type of Reconnaissance machine.
Killed at least one of every type of Combat machine.
Killed at least one of every type of Transport machine.
Rode a Charger, Bristleback, and Clawstrider.
Encountered and Focus scanned every type of machine.
Glided uninterrupted for 60 seconds.
Completed 2 quests that required a flying mount.
Won first place in two different Gauntlet Runs.
Completed 1 Arena challenge set.
Won a match against 2 different Machine Strike challengers.
Successfully performed 3 different unlockable melee combos.
Picked up 5 different heavy weapons.
Unlocked and used the overrides for 10 different types of machine.
Defeated the Tenakth melee master known as the Enduring.
Unlocked a Weapon Technique for 3 different weapon classes.
Learned all available skills on one tree.
Used dye flowers to unlock and apply a new dye.
Completed a New Game+ playthrough on any difficulty.
Completed a new or New Game+ playthrough on Ultra Hard difficulty.
Obtained all New Game+ weapons, dyes, and face paints.
Completed all main and side quests in the Burning Shores.
Located the missing Quen and discovered Londra's plan to leave Earth.
Uncovered the truth of Londra's plans for the Quen and rescued Seyka's sister.
Helped the Quen of Fleet's End recover priceless knowledge and rescue those held captive.
Defeated the awakened Horus and put a stop to Londra's plans.
Learned all new skills in the Burning Shores.
Reached player level 60.
Used Brimshine to purchase 1 outfit and 1 weapon.
Equipped an elite coil on a weapon or an elite weave on an outfit.
Fully upgraded the Specter Gauntlet.
Reached the Core of Cauldron THETA and accessed its information.
Encountered and Focus scanned every new machine in the Burning Shores.
Recovered all Pangea Figurines and completed the Dino Digits quiz.
Recovered all Delver Trinkets and unearthed their trove.
Discovered and completed all Aerial Captures.
Used Grapple Strike on 5 unique machines.
Killed 5 machines with the Specter Gauntlet while gliding.
Killed 5 Bileguts and 50 Stingspawn.