Here is the full list of all 18 Havendock achievements.
Build 500 structures on decks
Have 50 settlers
Have 50 bots
Completed 80 researches
Make the final construction and finish the game.
Reach 100% friendship on 6 traders
Use a Clone Potion Lv3
Use a Dynamite
Turn into a Chick
Visit Bird Island
Ride the mother kewi
Steal and sell Cattleman Josh’s shirt back to him
Equip a settler with a Moon Bunny Costume
Get a golden retriever
Upgrade a settler’s trait to level 5
Have a settler with a Level 15 trait
Catch a salmon with a Fishing Rod
Own a talking penguin