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