Here is the full list of all 80 Horizon Forbidden West Complete Edition achievements.
Reached player level 20.
Secured a base of operations and rebooted GAIA.
Reached the Core of a Cauldron and accessed its information.
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.
Survived the ambush at the Embassy and gained passage into the Forbidden West.
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 30.
Reached player level 50.
Defended the Kulrut and recovered AETHER.
Drained Las Vegas and recovered POSEIDON.
Encountered the Quen and recovered DEMETER.
Followed Beta's distress signal and brought her back to base.
Survived Thebes and befriended the Quen.
Flew into battle and vanquished Regalla.
Put an end to the Zenith threat and discovered Nemesis.
Aided both Drakka and Yarra and chose the better candidate.
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.
Defeated the outpost leader and recovered the tags from 4 Rebel Outposts.
Discovered and completed 3 Relic Ruins.
Completed 1 Arena challenge set.
Won a match against 2 different Machine Strike challengers.
Obtained 1 weapon from every weapon class.
Inflicted every elemental state on an enemy at least once.
Successfully performed 3 different unlockable melee combos.
Detached 100 components from machines.
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.
Upgraded a Valor Surge to its maximum level.
Fully upgraded 3 weapons.
Fully upgraded 3 different outfits.
Upgraded the Food Pouch, Potion Pouch, Resource Pouch, Trap Pouch, and any ammo pouch at least once.
Equipped a weapon of any tier with 2 coils.
Unlocked a Weapon Technique for 3 different weapon classes.
Learned all available skills on one tree.
Completed 1 Survey Drone, 1 Black Box, 1 Relic Ruin, 1 Vista Point, and 1 Signal Tower.
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.