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