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