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