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