Here is the full list of all 47 Vigil: The Longest Night achievements.
Followed Hilda's words to relieve the seal
Don't shake it anymore!
Complete the Mysterious Trader's request
Help August during his adventure
Complete the survival skill tree
Pass Sister Holly's test
Distribute the placebos to the Villagers in town
Forge 5 weapon/equipment enchanted and reach to +7
Help Thurber W. Sungi's investigation
Wake Daisy's soul inside the Devourer
Defeat Light Devourer
Stop the crazy Doctor
Give Isabella the ball
Defeat the Evil inside the wood
Defeat Dephil
Defeat The North Princess
Defeat Uptancos
Give the Cubic Crystals to the Doctor
Find the Golden Slime
Defeat Lord of the Misty Lake
Help James to find the salt
Complete Noax's request
Save all miners then talk to Edward
Buy Buffe's house
Defeat Erupting Flesh Cluster
Complete the sword skill tree
Help Daisy to get the medicine
Find Hamilton's belongings
Defeat Kelpie, the Lord of Tide
Collect all 7 lost paintings
Get the Fallen Eyeball from Hilda
Defeat the Ancient Guard once
Complete Duran's quest
Defeat Brood Mother
Defeat the Craving Terror outside the town
Welcome to the world of Vigil: The Longest Night!
Beg to Drew 5 times
Complete the axe skill tree
Complete the dual weapon skill tree
Complete the bow skill tree
Complete all skill trees
Reach maximum value of Throwing power
Reach maximum value of Arcane power
Collect all arcane items
Get at least one of every weapon in game
Get at least one of every equipment in game (including rings)
Collect all furniture