Here is the full list of all 32 BLACKTAIL achievements.
Poison the hedgehog
Free all the rats
Complete the game
Defeat every fightable mushroom
Find every Totem
Learn all the Gnowlledge
Put all the Lost and Found on the shelf
Kick a shroomy back into its lair.
Learn all the skill recipes
Open every Warden chest
Earn the Queen title
Discover quite a few rose secrets
Earn either the Ornithologist or the Beekeeper title
See all the spider logs
Find the Mushroom Sanctuary
Turn a blue Vodnik green
Squat many times
Brew every Special Treat
Kiss all the toads and take them to the Yard
Finish all the side quests
Brew every skill of a single Hex type
Hunt down a Golden Imp
Be either as good or as evil as possible
Befriend either Ant Queen or Mr. Larva
Earn the Favorite title
Hear a great lot of bobok gossip
Collect 32 Teeth
Fish out a few fish
Collect 20 Teeth
Accept Boruta's deal
Trick the bees
Smash many Root-infested vessels