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