Here is the full list of all 70 Kynseed achievements.
Strike Fred Barleycorn
Witness a Lucky Lucky Star
Pick a flower during a Flower Bloom
Fight during an Eclipse
Specialise your shop
Get married
Have a baby / adopt
Clear the story task Fool Me Twice
Clear the story task Burying The Past
Cook a 5 star meal
Clear Midwood
Travel to Evergreen
Clear the story task The Encounter
Visit one of the secret markets
Catch a fish during a Fish Frenzy
Defeat an elite monster
Clear the story task A Missing Child
Clear the story task The Unwell
Win a village competition
Fight during a Blood Moon
Receive a 5 star boon from a Goddess
Gift a villager all of their liked items
Clear Simplewood
Purchase a shop
Travel to Tir Na Nog
Mine some ore during an Ore Rush
Complete the Prologue
Travel to Briar
Purchase your first Fairweather item
Craft your first cure
Make an offering to the Goddesses
Cook your first meal
Form a bond of Love with a villager
Encourage a villager to Like you
Win an auction
Forge your first item
Become Friendly with a villager
Gift a villager one of their liked items
Perform a favour or notice board task for an NPC
Give an NPC a disliked item for their birthday
Discover all the map stones at a single location
Learn a skill from a master
Forge a 5 star item
Craft your first 5 star cure
Unlock all the perks for a shop
Pass on the Kynseed
Clear Simplewood after traveling as deep as you can
Clear Midwood after traveling as deep as you can
Clear Toughwood
Clear Toughwood after traveling as deep as you can
Discover all the map stones at every location
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 Murder Most Fowl
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
Rejuvenate a beloved animal
Purchase an item from the Ghost Trader
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
Witness Tickling Tom Hookfingers scaring a villager
Pick a mushroom during a Mushroom Sporing