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.
Place first in five fishing competitions.
Complete 150 Commerce Guild commissions.
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.
Propose to Emily in front of the Pumpkin Princess House.
Find more than 10 Ghost Badges in a single Day of Memories event.
Clear Level 100 of the Deepest Ruins.
Complete the main storyline.
Throw ten parties.
Used all items from the Vending Machine in the Deepest Ruins.
Meet Pa.
Get to Level 50 of the Deepest Ruins without using Vending Machines.
Clear Level 50 of the Deepest Ruins.
Clear Level 10 of the Deepest Ruins.
Enter the Deepest Ruins.
Accept the proposal from Mint.
Defeat the rogue knight and All Source.
Getting caught by the Sky Shark Pirates.
Recognize 5 different constellations.
Be ranked number one in a seasonal workshop ranking.
Successfully make 30 different dishes.
Completed 100 Inspections at the Commerce Guild.
Expand the land area of the workshop to the maximum.
Workshop reputation reaches Level S.
Gather 50 assembly diagrams.
Throw a party.
Keep the spiciness of the hotpot above 85 for 10 seconds during the Winter Solstice festival.
Have maximum Stamina reach 600.
Encounter the rogue knight.
Complete the new Portia Harbor.
Have maximum HP reach 2000.
Pass the trials set by Ginger's family.
Recover 15 different types of relics.
Cumulatively picked up 500 feces.
Complete Phyllis's Dream
Complete South Block.
Congratulations!
Accept Gust's proposal.
Adopt Scraps.
Place 5 advertisements in the Portia Times for the workshop.
Complete the adventure in the cave with Arlo.
Unlock all backpack slots.
You were at fault...
Enjoy some fireworks with Dr. Xu.
Fail at cooking 1 time.
Accumulated 10 times during the Doodles mini-game where the play date is happy with the result.
Provide 100 Data Discs to the Church of the Light.
Get more than 40 Ghost Badges in Haunted Cave Exploration.
Use 50 Fireworks in one setting.
Accumulated 10 meals during dates and play dates.
Defeat 30 rare monsters.
Opening Of The Museum
Find a diamond.
Help build the Portia Bridge.
Try lasso roping for 50 times.
Everyone likes you!
Accumulatively give out 500 gifts.
Win the highest possible award in the Slots mini-game.
Accumulated 10 times in the Swing mini-game where the play date is happy with the result.
Defeated all the people that can spar in Portia.
You missed a date.
Provide 100 Data Discs to the Research Center.
Win 20 games of Rock Paper Scissors in 3-0 fashion.
Help fix Ack the living AI.
Help the Portia Tree Farm be operational again.
Adopt Pinky.
Clear all the levels in any Hazardous Ruins.
Open 50 treasure chests.
Cut down 200 trees.
Play the seesaw and get your playmate to catch a bird.
Get 300 items by kicking trees.
Did I just use the Blender to mix feces...?
The first photo taken with someone else.
Pick up 7 gifts during the Day of the Bright Sun event.
Gain 150 points in the Dart game.
Finish with a over 90% accuracy rate in the Balloons mini-game.
Talk with other town folks over 500 times.
Complete all five Dee-dee transport commissions.
Accumulate 10,000 Gols.
Pass the test to enter the Collapsed Wasteland.
Win at Cross Five 50 times.
Forced to sleep at 3:00 in the morning.
Accumulatively give out 50 gifts that people like.
Discover a mysterious room in Abandoned Ruins.
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.