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