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