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