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