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