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 150 Commerce Guild commissions.
Have or adopt a second child.
Achieve the relationship "Happy Child" with your kid.
Have or adopt a child.
Achieve the best relationship with your spouse.
Throw ten parties.
Accept the proposal from Mint.
Getting divorced.
Recognize 5 different constellations.
Have maximum Stamina reach 600.
Congratulations!
Pass the trials set by Ginger's family.
Unlock all backpack slots.
Propose to Emily in front of the Pumpkin Princess House.
Accumulated 10 meals during dates and play dates.
Place 5 advertisements in the Portia Times for the workshop.
Win 20 games of Rock Paper Scissors in 3-0 fashion.
Completed 100 Inspections at the Commerce Guild.
Clear Level 100 of the Deepest Ruins.
Used all items from the Vending Machine in the Deepest Ruins.
Throw a party.
Complete the main storyline.
Meet Pa.
Expand the land area of the workshop to the maximum.
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 at Cross Five 50 times.
Use 50 Fireworks in one setting.
Play the seesaw and get your playmate to catch a bird.
Accumulated 10 times during the Doodles mini-game where the play date is happy with the result.
Have maximum HP reach 2000.
Defeat the rogue knight and All Source.
Getting caught by the Sky Shark Pirates.
Place first in five fishing competitions.
You were at fault...
Complete the adventure in the cave with Arlo.
Defeat 30 rare monsters.
Accept Gust's proposal.
Get more than 40 Ghost Badges in Haunted Cave Exploration.
Recover 15 different types of relics.
Complete Phyllis's Dream
Be ranked number one in a seasonal workshop ranking.
Workshop reputation reaches Level S.
Encounter the rogue knight.
Gather 50 assembly diagrams.
Complete the new Portia Harbor.
Cumulatively picked up 500 feces.
Keep the spiciness of the hotpot above 85 for 10 seconds during the Winter Solstice festival.
Try lasso roping for 50 times.
Accumulated 10 times in the Swing mini-game where the play date is happy with the result.
Provide 100 Data Discs to the Church of the Light.
Complete South Block.
Enjoy some fireworks with Dr. Xu.
Successfully make 30 different dishes.
Get 300 items by kicking trees.
Clear all the levels in any Hazardous Ruins.
Accumulatively give out 500 gifts.
Everyone likes you!
Find a diamond.
Help build the Portia Bridge.
Defeated all the people that can spar in Portia.
Provide 100 Data Discs to the Research Center.
Find more than 10 Ghost Badges in a single Day of Memories event.
Opening Of The Museum
Adopt Scraps.
Finish with a over 90% accuracy rate in the Balloons mini-game.
Win the highest possible award in the Slots mini-game.
Forced to sleep at 3:00 in the morning.
You missed a date.
Fail at cooking 1 time.
Give out a gift that the other person doesn't like.
Help fix Ack the living AI.
Accumulatively give out 50 gifts that people like.
Help the Portia Tree Farm be operational again.
Open 50 treasure chests.
Complete all five Dee-dee transport commissions.
Adopt Pinky.
Gain 150 points in the Dart game.
Cut down 200 trees.
Did I just use the Blender to mix feces...?
Accumulate 10,000 Gols.
Talk with other town folks over 500 times.
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.
Enter the Abandoned Ruins for the first time.
Register your workshop.
Arrive at Portia.