Full list of all 79 Horizon Zero Dawn Complete Edition achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Found and accessed a Vantage datapoint.
Discovered a strange metal flower.
Earned at least a Half Sun mark in all three trials at one Hunting Ground.
Reached player level 10.
Killed all the corrupted machines in a Corrupted Zone.
Used a Weapon Coil or Outfit Weave on a modifiable weapon or outfit.
Performed a stealth kill on 10 machines.
Overcame adversity and placed first in the Proving.
Detached 10 components from machines during combat.
Defeated the Sawtooth that threatened the Nora.
Learned to hunt and fight alongside Rost.
Obtained all Horizon Zero Dawn achievements.
Killed 3 enemies using the Strike from Above skill.
Killed 10 machines weak to Fire while burning, or weak to Freeze while frozen.
Detached 5 heavy weapons from machines during combat.
Unlocked and used the overrides for 7 different types of machine.
Killed 30 human enemies by landing headshots on them.
Found and knocked over all of the Grazer training dummies in the Nora region.
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.
Reached player level 25.
Reached player level 40.
Reached player level 50.
Learned all available skills.
Scaled a Tallneck and accessed its information.
Took back a settlement from a bandit clan.
Reached the Core of a Cauldron and accessed its information.
Earned a Blazing Sun mark in all three trials at one Hunting Ground.
Scaled all of the Tallnecks and accessed their information.
Took back all settlements from the bandit clans.
Reached the Core of every Cauldron and accessed the information within.
Earned at least a Half Sun mark in all trials at all of the Hunting Grounds.
Earned a Blazing Sun mark in all trials at all of the Hunting Grounds.
Killed all the corrupted machines in every Corrupted Zone.
Encountered and Focus scanned every type of machine.
Found a wooden effigy left by a Banuk traveler.
Found an ancient vessel once used by the Old Ones.
Found and accessed all of the Vantage datapoints.
Found all of the Metal Flowers.
Found all of Arnak's figures.
Found all the Ancient Vessels.
Recovered an ancient technology and put it to use.
Destroyed the corruption inside the Nora valley.
Learned of the ancient past at Maker's End.
Infiltrated the Eclipse battle camp and crashed their network.
Discovered the truth of Zero Dawn.
Defeated the invaders and went inside the sacred mountain.
Explored the Mountain That Fell and recovered a powerful weapon.
Given Aloy's actions, all possible optional allies joined the defense.
Ended the threat of the ancient war machines.
Found the Nora War-Chief and defeated the killers in the Ring of Metal.
Helped Erend investigate Ersa's fate, and foiled a plot against Meridian.
Aided the escapes of Uthid and the child king Itamen from the Shadow Carja.
Rose through the ranks of the Hunters Lodge and helped Talanah defeat Redmaw.
Completed a New Game+ playthrough on any difficulty.
Completed a New Game+ playthrough on Ultra Hard difficulty.
Survived the Shaman's Path and found Ourea's retreat.
Challenged Aratak at the Frostfigures and won.
Successfully assaulted Thunder's Drum.
Drove out the threat within the mountain.
Completely drained the floodwater from inside the Greycatch.
Met Ikrie again at the Snowchants Hunting Ground and took first place in her challenge.
Acquired the improved versions of three weapons from Varga.
Completed all side quests and errands in the Frozen Wilds.
Completed the Tallneck, Bandit Camp and Hunting Ground in the Cut.
Applied a modification to your spear.
Killed 5 enemies using the Dismount Strike skill.
Used the Machine Repair or Mount Repair skill on 5 different types of machine.
Killed 15 Scorcher machines.
Killed 10 Frostclaw machines.
Killed 6 Fireclaw machines.
Disabled all Control Towers by overriding or destroying them.
Found all of the Pigments in the Cut.
Found all of the Animal Figurines in the Cut.
Traded Bluegleam for a special weapon or outfit.
Learned all of the new skills in the Frozen Wilds.
Reached player level 60.