Here is the full list of all 29 The Falconeer achievements.
Retured to the scene of the Nodbomb blast
Filled all mutagen slots for your Falcon
Clocked the fastest time on all 5 racecourses
Completed the Epilogue
Completed the Oberon's Reach chapter
Discovered all the shrines and temples
Sunk 3 ships in one mission
Converted a fortified position for the Mancer Order
Purchased all 5 falcon types from races
Completed the Shard chapter
Completed the Cleftspire chapter
Took down 10 air targets in one mission
Unlocked all permits in every campaign
Clocked fastest time on a racecourse
Completed the Dunkle chapter
Found both biochemists and the weapons trader
Bought a new type of weapon
Found all Imperial locations
Found all Mancer locations
Converted a fortified position for the Imperium
Found all Civilian Free House locations
Found all 3 seachantresses
Took down 5 air targets in one mission
Completed the Prologue
Discovered a shrine or a temple
Converted a fortified position for the Pirates
Bought all chants from the seachantresses
Found all the fortified locations
Destroyed 15 turrets in one mission