Here is the full list of all 41 The Serpent Rogue achievements.
Research all Ingredients in your Journal
Tame a Valravn
Apply the "Stinky" status effect to yourself or an NPC 3 times
Open 3 Moonstone Chests
Brew 30 Unique Potions
Destroy 10 Soul Vessels
Disperse 3 Ghouls using the Undertaker
Open 25 Locks using a Picklock
Resurrect 5 followers with the Undertaker
Bind 15 people from the Harbormaster
Spend 500 Food to speed up time while sleeping
Using water, extinguish fire from yourself 3 times
Enhance 10 Weapons in the Smeltery
Discover 15 Creatures in the Journal
Block incoming damage with a Broom 50 times
Bind 10 Creatures from the Mavka
Cook 20 different dishes
Lay 5 Eggs
Create 5 Creatures
Steal 8 Items from Creatures
Discover a Dobhar Chu
Gather 10 Followers in the Camp location
Collect 500 Gold Coins
Shoot down 5 flying Chickens
Catch 15 Butterflies
Brew 10 Sloppy Potions
Brew 15 Unique Potions
Play with 5 different Creatures
Find 25 Worms in Stumps
Remove Corruption from 12 Creatures
Remove Poison from yourself or your followers 10 times
Eat raw food 5 times
Discover the location of the Undertaker
Discover the Gorgon's Location
Buy 5 Items From the Merchant House
Find the Fighting Pit
Complete a Fallen Warrior Quest
"Receive 100 total damage from enemies "
Light up an extinguished Torch
Catch 25 Fish in Water Banks
Craft a Sanctum Vessel