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