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.
Propose to Emily in front of the Pumpkin Princess House.
Keep the spiciness of the hotpot above 85 for 10 seconds during the Winter Solstice festival.
Adopt Scraps.
Provide 100 Data Discs to the Research Center.
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.
Pass the trials set by Ginger's family.
Find more than 10 Ghost Badges in a single Day of Memories event.
Recognize 5 different constellations.
Accept Gust's proposal.
Complete Phyllis's Dream
You were at fault...
Complete the adventure in the cave with Arlo.
Getting divorced.
Throw ten parties.
Accumulated 10 meals during dates and play dates.
Accumulated 10 times during the Doodles mini-game where the play date is happy with the result.
Place 5 advertisements in the Portia Times for the workshop.
Accumulated 10 times in the Swing mini-game where the play date is happy with the result.
Play the seesaw and get your playmate to catch a bird.
Be ranked number one in a seasonal workshop ranking.
Expand the land area of the workshop to the maximum.
Win the highest possible award in the Slots mini-game.
Win at Cross Five 50 times.
Win 20 games of Rock Paper Scissors in 3-0 fashion.
Have maximum Stamina reach 600.
Achieve the best relationship with your spouse.
Clear Level 100 of the Deepest Ruins.
Throw a party.
Used all items from the Vending Machine in the Deepest Ruins.
Give out a gift that the other person doesn't like.
Use 50 Fireworks in one setting.
Congratulations!
Accept the proposal from Mint.
Get to Level 50 of the Deepest Ruins without using Vending Machines.
Clear Level 50 of the Deepest Ruins.
Completed 100 Inspections at the Commerce Guild.
You missed a date.
Cumulatively picked up 500 feces.
Get more than 40 Ghost Badges in Haunted Cave Exploration.
Workshop reputation reaches Level S.
Complete the main storyline.
Unlock all backpack slots.
Clear Level 10 of the Deepest Ruins.
Successfully make 30 different dishes.
Enter the Deepest Ruins.
Defeat 30 rare monsters.
Get 300 items by kicking trees.
Try lasso roping for 50 times.
Finish with a over 90% accuracy rate in the Balloons mini-game.
Gain 150 points in the Dart game.
Defeated all the people that can spar in Portia.
Meet Pa.
Defeat the rogue knight and All Source.
Getting caught by the Sky Shark Pirates.
Clear all the levels in any Hazardous Ruins.
Fail at cooking 1 time.
Have maximum HP reach 2000.
The first photo taken with someone else.
Pick up 7 gifts during the Day of the Bright Sun event.
Discover a mysterious room in Abandoned Ruins.
Gather 50 assembly diagrams.
Encounter the rogue knight.
Enjoy some fireworks with Dr. Xu.
Enter the Abandoned Ruins for the first time.
Arrive at Portia.
Register your workshop.
Pass the test to enter the Collapsed Wasteland.
Help the Portia Tree Farm be operational again.
Help fix Ack the living AI.
Help build the Portia Bridge.
Opening Of The Museum
Complete South Block.
Complete the new Portia Harbor.
Place first in five fishing competitions.
Provide 100 Data Discs to the Church of the Light.
Forced to sleep at 3:00 in the morning.
Open 50 treasure chests.
Cut down 200 trees.
Did I just use the Blender to mix feces...?
Accumulate 10,000 Gols.
Recover 15 different types of relics.
Find a diamond.
Accumulatively give out 500 gifts.
Accumulatively give out 50 gifts that people like.
Talk with other town folks over 500 times.
Adopt Pinky.
Everyone likes you!