Full list of all 27 Necesse achievements.
The base game contains 11 achievements, and there are 2 DLC packs containing 16 achievements.
Start a settlement
Be careful to not get lost!
Defeat your first boss
Get your first pet
Change your spawn point
Enchant an item using the mage
Obtain all possible items
Visit all different biomes
Fish up a total of 500 items
Run a full marathon on foot
Play the game for a full 24 hours
Increase max trinket slots
Complete a settlement quest tier
Have an inventory full of different items
Wear a gold crown
Catch 2 fish in 1 throw
Have all possible settlers live in the same settlement
Reach the deep caves
Equip your first trinket ability
Listen to a vinyl on the music player
Have a settler reach 100% happiness
Kill a Zombie in a single hit
Kill a boss in less than 30 seconds
Recruit your first settler
Defeat the Fallen Wizard
Defeat the Pirate Captain
Find and dig up a gravestone