Here is the full list of all 70 Kynseed achievements.
Travel to Evergreen
Clear the story task The Unwell
Have a baby / adopt
Discover all the date spots
Learn all the skills from a master
Clear the story task The Encounter
Win one of the top 3 prizes in Squeal or No Squeal
Receive an item from a ghost during the Spirit Walk
Craft your first 5 star cure
Visit one of the secret markets
Fight during an Eclipse
Fight during a Blood Moon
Clear Toughwood after traveling as deep as you can
Witness Tickling Tom Hookfingers scaring a villager
Clear Toughwood
Defeat an elite monster
Catch a fish during a Fish Frenzy
Clear the story task A Missing Child
Forge a 5 star item
Cook a 5 star meal
Strike Fred Barleycorn
Pick a mushroom during a Mushroom Sporing
Clear Midwood
Clear Midwood after traveling as deep as you can
Win a village competition
Take part in a dance
Clear Simplewood after traveling as deep as you can
Mine some ore during an Ore Rush
Clear the story task Murder Most Fowl
Purchase a shop
Get married
Clear Simplewood
Travel to Tir Na Nog
Witness a Lucky Lucky Star
Pick a flower during a Flower Bloom
Purchase an item from the Ghost Trader
Complete the Prologue
Purchase your first Fairweather item
Travel to Briar
Receive a 5 star boon from a Goddess
Gift a villager all of their liked items
Give an NPC a disliked item for their birthday
Encourage a villager to Like you
Become Friendly with a villager
Form a bond of Love with a villager
Craft your first cure
Gift a villager one of their liked items
Make an offering to the Goddesses
Win an auction
Cook your first meal
Forge your first item
Perform a favour or notice board task for an NPC
Learn a skill from a master
Discover all the map stones at a single location
Specialise your shop
Unlock all the perks for a shop
Pass on the Kynseed
Discover all the map stones at every location
Travel to Voide
Learn all the skills from all the masters
Clear the story task Fool Me Twice
Clear the story task Burying The Past
Clear the story task Third Time Lucky
Clear the story task Charming The Wrym
Clear the story task The Jabberwock
Win the top prize on Marble Toss
Rejuvenate a beloved animal
Attend the Summertide event for a second time
Plant 3 magic beans
Take an egg from a Chicken Migration