Full list of all 29 The Falconeer achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox One.
Clocked fastest time on a racecourse
Found both biochemists and the weapons trader
Found all 3 seachantresses
Completed the Prologue
Discovered a shrine or a temple
Complete the Dunkle chapter
Complete the Cleftspire chapter
Complete the Shard chapter
Complete the Oberon's Reach chapter
Complete the Epilogue
Return to the scene of the Nod Bomb blast
Fill all mutagen slots for your Falcon
Convert a fortified position for the Imperium
Convert a fortified position for the Mancer Order
Convert a fortified position for the Pirates
Buy all chants from the seachantresses
Clock the fastest time on all 5 racecourses
Purchase all 5 falcon types from races
Unlock all permits in every campaign
Discover all the shrines and temples
Buy a new type of weapon
Find all the fortified locations
Find all Imperial locations
Find all Civilian Free House locations
Find all Mancer locations
Take down 5 air targets in one mission
Take down 10 air targets in one mission
Destroy 15 turrets in one mission
Sink 3 ships in one mission