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