The Far Harbor Add-on for Fallout 4 has 10 achievements.
Complete the quest "Cleansing the Land"
Collect all issues of "The Islander's Almanac" magazine
Complete the quest "Close to Home"
Complete the quest "The Way Life Should Be"
Unlock 3 Far Harbor Workshop Locations
Defeat 30 Far Harbor Sea Creatures
Discover 20 Far Harbor Locations
Cook One of the New Far Harbor Recipes
Complete the quest "Where You Belong"
Complete the quest "Far From Home"