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.
Took back all settlements from the bandit clans.
Killed all the corrupted machines in every Corrupted Zone.
Recovered an ancient technology and put it to use.
Found all of the Metal Flowers.
Explored the Mountain That Fell and recovered a powerful weapon.
Defeated the invaders and went inside the sacred mountain.
Rose through the ranks of the Hunters Lodge and helped Talanah defeat Redmaw.
Aided the escapes of Uthid and the child king Itamen from the Shadow Carja.
Discovered the truth of Zero Dawn.
Infiltrated the Eclipse battle camp and crashed their network.
Scaled all of the Tallnecks and accessed their information.
Found and accessed all of the Vantage datapoints.
Encountered and Focus scanned every type of machine.
Reached the Core of every Cauldron and accessed the information within.
Reached player level 40.
Killed at least one of every type of Combat machine.
Found all of Arnak's figures.
Earned at least a Half Sun mark in all three trials at one Hunting Ground.
Earned a Blazing Sun mark in all three trials at one Hunting Ground.
Killed 3 enemies using the Strike from Above skill.
Learned of the ancient past at Maker's End.
Found all the Ancient Vessels.
Helped Erend investigate Ersa's fate, and foiled a plot against Meridian.
Detached 5 heavy weapons from machines during combat.
Killed at least one of every type of Transport machine.
Unlocked and used the overrides for 7 different types of machine.
Killed at least one of every type of Acquisition machine.
Reached player level 25.
Destroyed the corruption inside the Nora valley.
Killed 10 machines weak to Fire while burning, or weak to Freeze while frozen.
Reached the Core of a Cauldron and accessed its information.
Killed at least one of every type of Reconnaissance machine.
Found the Nora War-Chief and defeated the killers in the Ring of Metal.
Killed 30 human enemies by landing headshots on them.
Found a wooden effigy left by a Banuk traveler.
Took back a settlement from a bandit clan.
Found an ancient vessel once used by the Old Ones.
Scaled a Tallneck and accessed its information.
Killed all the corrupted machines in a Corrupted Zone.
Found and accessed a Vantage datapoint.
Discovered a strange metal flower.
Reached player level 10.
Overcame adversity and placed first in the Proving.
Defeated the Sawtooth that threatened the Nora.
Performed a stealth kill on 10 machines.
Detached 10 components from machines during combat.
Used a Weapon Coil or Outfit Weave on a modifiable weapon or outfit.
Learned to hunt and fight alongside Rost.
Obtained all Horizon Zero Dawn achievements.
Found and knocked over all of the Grazer training dummies in the Nora region.
Reached player level 50.
Learned all available skills.
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.
Given Aloy's actions, all possible optional allies joined the defense.
Ended the threat of the ancient war machines.
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.