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