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 the main storyline.
Meet Pa.
Clear Level 100 of the Deepest Ruins.
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.
Clear Level 10 of the Deepest Ruins.
Defeat 30 rare monsters.
Enter the Deepest Ruins.
Completed 100 Inspections at the Commerce Guild.
Complete 150 Commerce Guild commissions.
Achieve the relationship "Happy Child" with your kid.
Place first in five fishing competitions.
Have or adopt a second child.
Pick up 7 gifts during the Day of the Bright Sun event.
Have or adopt a child.
Everyone likes you!
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.
Defeat the rogue knight and All Source.
Getting caught by the Sky Shark Pirates.
Accept the proposal from Mint.
Accept Gust's proposal.
Complete the adventure in the cave with Arlo.
Complete Phyllis's Dream
Achieve the best relationship with your spouse.
Place 5 advertisements in the Portia Times for the workshop.
Have maximum HP reach 2000.
Throw ten parties.
Successfully make 30 different dishes.
Accumulatively give out 500 gifts.
Propose to Emily in front of the Pumpkin Princess House.
Have maximum Stamina reach 600.
Recognize 5 different constellations.
Pass the trials set by Ginger's family.
Win at Cross Five 50 times.
Gather 50 assembly diagrams.
Workshop reputation reaches Level S.
Complete the new Portia Harbor.
Unlock all backpack slots.
Encounter the rogue knight.
Accumulated 10 times in the Swing mini-game where the play date is happy with the result.
Getting divorced.
Congratulations!
Accumulated 10 times during the Doodles mini-game where the play date is happy with the result.
Enjoy some fireworks with Dr. Xu.
Play the seesaw and get your playmate to catch a bird.
Expand the land area of the workshop to the maximum.
Use 50 Fireworks in one setting.
Throw a party.
Get more than 40 Ghost Badges in Haunted Cave Exploration.
Find more than 10 Ghost Badges in a single Day of Memories event.
Defeated all the people that can spar in Portia.
Cumulatively picked up 500 feces.
Win the highest possible award in the Slots mini-game.
Complete South Block.
Get 300 items by kicking trees.
Finish with a over 90% accuracy rate in the Balloons mini-game.
Accumulated 10 meals during dates and play dates.
Try lasso roping for 50 times.
Adopt Scraps.
Cut down 200 trees.
Provide 100 Data Discs to the Church of the Light.
Give out a gift that the other person doesn't like.
You were at fault...
Complete all five Dee-dee transport commissions.
You missed a date.
Find a diamond.
Opening Of The Museum
Help build the Portia Bridge.
Clear all the levels in any Hazardous Ruins.
Recover 15 different types of relics.
Fail at cooking 1 time.
Did I just use the Blender to mix feces...?
Accumulatively give out 50 gifts that people like.
Help the Portia Tree Farm be operational again.
Talk with other town folks over 500 times.
Gain 150 points in the Dart game.
Help fix Ack the living AI.
Win 20 games of Rock Paper Scissors in 3-0 fashion.
Open 50 treasure chests.
Adopt Pinky.
The first photo taken with someone else.
Provide 100 Data Discs to the Research Center.
Pass the test to enter the Collapsed Wasteland.
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.