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.
Throw ten parties.
Win 20 games of Rock Paper Scissors in 3-0 fashion.
Try lasso roping for 50 times.
Expand the land area of the workshop to the maximum.
Complete Phyllis's Dream
Complete all five Dee-dee transport commissions.
You were at fault...
Pass the trials set by Ginger's family.
Cumulatively picked up 500 feces.
Accept the proposal from Mint.
Win at Cross Five 50 times.
Find more than 10 Ghost Badges in a single Day of Memories event.
Accept Gust's proposal.
Enjoy some fireworks with Dr. Xu.
Have or adopt a second child.
Achieve the relationship "Happy Child" with your kid.
Propose to Emily in front of the Pumpkin Princess House.
Getting divorced.
Unlock all backpack slots.
Accumulatively give out 500 gifts.
Have maximum Stamina reach 600.
Have or adopt a child.
Clear Level 100 of the Deepest Ruins.
Complete the main storyline.
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.
Place first in five fishing competitions.
Meet Pa.
Provide 100 Data Discs to the Church of the Light.
Get more than 40 Ghost Badges in Haunted Cave Exploration.
Have maximum HP reach 2000.
You missed a date.
Clear Level 10 of the Deepest Ruins.
Enter the Deepest Ruins.
Be ranked number one in a seasonal workshop ranking.
Defeat the rogue knight and All Source.
Getting caught by the Sky Shark Pirates.
Workshop reputation reaches Level S.
Place 5 advertisements in the Portia Times for the workshop.
Encounter the rogue knight.
Accumulated 10 times during the Doodles mini-game where the play date is happy with the result.
Successfully make 30 different dishes.
Everyone likes you!
Recover 15 different types of relics.
Gather 50 assembly diagrams.
Complete the new Portia Harbor.
Throw a party.
Defeat 30 rare monsters.
Recognize 5 different constellations.
Win the highest possible award in the Slots mini-game.
Achieve the best relationship with your spouse.
Defeated all the people that can spar in Portia.
Get 300 items by kicking trees.
Completed 100 Inspections at the Commerce Guild.
Complete South Block.
Congratulations!
Accumulated 10 times in the Swing mini-game where the play date is happy with the result.
Use 50 Fireworks in one setting.
Accumulated 10 meals during dates and play dates.
Adopt Scraps.
Clear all the levels in any Hazardous Ruins.
Play the seesaw and get your playmate to catch a bird.
Finish with a over 90% accuracy rate in the Balloons mini-game.
Keep the spiciness of the hotpot above 85 for 10 seconds during the Winter Solstice festival.
Complete the adventure in the cave with Arlo.
Find a diamond.
Help build the Portia Bridge.
Opening Of The Museum
Adopt Pinky.
Did I just use the Blender to mix feces...?
Accumulatively give out 50 gifts that people like.
Provide 100 Data Discs to the Research Center.
Help fix Ack the living AI.
Talk with other town folks over 500 times.
Help the Portia Tree Farm be operational again.
Fail at cooking 1 time.
Gain 150 points in the Dart game.
Discover a mysterious room in Abandoned Ruins.
Open 50 treasure chests.
Cut down 200 trees.
Accumulate 10,000 Gols.
Pass the test to enter the Collapsed Wasteland.
The first photo taken with someone else.
Pick up 7 gifts during the Day of the Bright Sun event.
Forced to sleep at 3:00 in the morning.
Give out a gift that the other person doesn't like.
Enter the Abandoned Ruins for the first time.
Register your workshop.
Arrive at Portia.