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