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