Here is the full list of all 49 Wayfinder achievements.
Complete Codex Halls Expedition
Unlock a Weapon Mastery
Reach a Power Level of 2500
Reach Level 30 with a Warmaster
Reach Level 30 with an Arcanist
Reach Level 30 with a Survivalist
Reach Level 30 with a Weapon
Temper a Weapon 1 Time
Fully Temper a Weapon
Affinity Boost a Weapon 1 time
Spend an Affinity Point
Spend 30 Affinity Points
Aquire 100k Gold
Acquire 100k Memory Echoes
Complete the Main Story Quest: 'Eyes to See'
Complete the Main Story Quest: 'Bad Omens'
Complete the Huntmaster's Questline: 'Scavenger Hunt'
Complete Kestrel's Questline: 'The Final Score'
Complete the Deepwood Holt Questline: 'The Greater Good'
Complete the Curator's Questline: 'A Fragmentary Passage'
Complete Old Kite's Questline: 'Honor Among Thieves'
Complete Unar the Mystic's Questline: 'Last of the Woodwen'
Light all Highlands Signal Fires
Craft 99 Flasks
Discover 25 landmarks
Complete 30 Jobs
Unlock your Apartment
Summon a Wayfinder
Craft a Weapon
Craft an Accessory
Perform Echo Fusion 1 time
Perform Echo Fusion 100 times
Upgrade an Ability
Complete a Mutated run of a Lost Zone
Complete 50 Mutated runs of a Lost Zone
Complete 10 Lost Zones
Complete 100 Lost Zones
Complete a Hunt
Complete 50 Hunts
Defeat a Heroic Facsimile Boss
Defeat a Heroic Gloom Tear Boss
Complete 1000 Events
Complete the Mass Deception Event Without Triggering any Deceivers
Win the Max Prize in the Trickster Bar Event
Defeat the Talon of Pyre
Complete Difficulty Sphere 04 of a Lost Zone or Hunt
Apply a dye 10 times