Here is the full list of all 91 My Time At Portia achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Have or adopt a second child.
Achieve the relationship "Happy Child" with your kid.
Have or adopt a child.
Win at Cross Five 50 times.
Expand the land area of the workshop to the maximum.
Achieve the best relationship with your spouse.
Complete Phyllis's Dream
Pass the trials set by Ginger's family.
Place first in five fishing competitions.
Complete 150 Commerce Guild commissions.
Enjoy some fireworks with Dr. Xu.
Getting divorced.
Accept the proposal from Mint.
Throw ten parties.
Clear Level 100 of the Deepest Ruins.
Win 20 games of Rock Paper Scissors in 3-0 fashion.
Accumulated 10 meals during dates and play dates.
Recognize 5 different constellations.
Get 300 items by kicking trees.
Complete the main storyline.
Win the highest possible award in the Slots mini-game.
Used all items from the Vending Machine in the Deepest Ruins.
Have maximum Stamina reach 600.
Meet Pa.
Accumulated 10 times in the Swing mini-game where the play date is happy with the result.
Get to Level 50 of the Deepest Ruins without using Vending Machines.
Clear Level 50 of the Deepest Ruins.
Successfully make 30 different dishes.
Propose to Emily in front of the Pumpkin Princess House.
Cumulatively picked up 500 feces.
Congratulations!
Accept Gust's proposal.
Clear Level 10 of the Deepest Ruins.
Enter the Deepest Ruins.
Have maximum HP reach 2000.
Defeat the rogue knight and All Source.
Getting caught by the Sky Shark Pirates.
You were at fault...
Throw a party.
Try lasso roping for 50 times.
Complete the adventure in the cave with Arlo.
Defeat 30 rare monsters.
Find more than 10 Ghost Badges in a single Day of Memories event.
Use 50 Fireworks in one setting.
Completed 100 Inspections at the Commerce Guild.
Finish with a over 90% accuracy rate in the Balloons mini-game.
Gather 50 assembly diagrams.
Encounter the rogue knight.
Complete the new Portia Harbor.
Accumulated 10 times during the Doodles mini-game where the play date is happy with the result.
Provide 100 Data Discs to the Church of the Light.
You missed a date.
Workshop reputation reaches Level S.
Unlock all backpack slots.
Place 5 advertisements in the Portia Times for the workshop.
Complete South Block.
Everyone likes you!
Defeated all the people that can spar in Portia.
Accumulatively give out 500 gifts.
Be ranked number one in a seasonal workshop ranking.
Give out a gift that the other person doesn't like.
Keep the spiciness of the hotpot above 85 for 10 seconds during the Winter Solstice festival.
Play the seesaw and get your playmate to catch a bird.
Find a diamond.
Opening Of The Museum
Help build the Portia Bridge.
Adopt Scraps.
Recover 15 different types of relics.
Get more than 40 Ghost Badges in Haunted Cave Exploration.
Clear all the levels in any Hazardous Ruins.
Help the Portia Tree Farm be operational again.
Help fix Ack the living AI.
Gain 150 points in the Dart game.
Open 50 treasure chests.
Talk with other town folks over 500 times.
Accumulatively give out 50 gifts that people like.
Did I just use the Blender to mix feces...?
Provide 100 Data Discs to the Research Center.
Fail at cooking 1 time.
Cut down 200 trees.
Adopt Pinky.
Complete all five Dee-dee transport commissions.
Accumulate 10,000 Gols.
The first photo taken with someone else.
Pick up 7 gifts during the Day of the Bright Sun event.
Pass the test to enter the Collapsed Wasteland.
Discover a mysterious room in Abandoned Ruins.
Forced to sleep at 3:00 in the morning.
Enter the Abandoned Ruins for the first time.
Register your workshop.
Arrive at Portia.