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