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.
Complete all five Dee-dee transport commissions.
Find more than 10 Ghost Badges in a single Day of Memories event.
Get more than 40 Ghost Badges in Haunted Cave Exploration.
Clear Level 100 of the Deepest Ruins.
Have maximum Stamina reach 600.
Successfully make 30 different dishes.
Accept Gust's proposal.
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.
Recognize 5 different constellations.
Pass the trials set by Ginger's family.
Accumulatively give out 500 gifts.
Accept the proposal from Mint.
Win the highest possible award in the Slots mini-game.
You were at fault...
Complete Phyllis's Dream
Defeat 30 rare monsters.
Enjoy some fireworks with Dr. Xu.
Getting divorced.
Have or adopt a second child.
Achieve the relationship "Happy Child" with your kid.
Place first in five fishing competitions.
Complete 150 Commerce Guild commissions.
Win 20 games of Rock Paper Scissors in 3-0 fashion.
Throw ten parties.
Have or adopt a child.
Cumulatively picked up 500 feces.
Win at Cross Five 50 times.
Accumulated 10 meals during dates and play dates.
Place 5 advertisements in the Portia Times for the workshop.
Accumulated 10 times in the Swing mini-game where the play date is happy with the result.
Unlock all backpack slots.
Try lasso roping for 50 times.
Throw a party.
Achieve the best relationship with your spouse.
Use 50 Fireworks in one setting.
Expand the land area of the workshop to the maximum.
Accumulatively give out 50 gifts that people like.
Adopt Scraps.
You missed a date.
Defeated all the people that can spar in Portia.
Accumulated 10 times during the Doodles mini-game where the play date is happy with the result.
Get 300 items by kicking trees.
Clear Level 10 of the Deepest Ruins.
Congratulations!
Clear all the levels in any Hazardous Ruins.
Play the seesaw and get your playmate to catch a bird.
Gain 150 points in the Dart game.
Finish with a over 90% accuracy rate in the Balloons mini-game.
Everyone likes you!
Recover 15 different types of relics.
Give out a gift that the other person doesn't like.
Have maximum HP reach 2000.
Complete the adventure in the cave with Arlo.
Be ranked number one in a seasonal workshop ranking.
Complete the main storyline.
Workshop reputation reaches Level S.
Keep the spiciness of the hotpot above 85 for 10 seconds during the Winter Solstice festival.
Meet Pa.
Enter the Deepest Ruins.
Completed 100 Inspections at the Commerce Guild.
Defeat the rogue knight and All Source.
Getting caught by the Sky Shark Pirates.
Encounter the rogue knight.
Gather 50 assembly diagrams.
Complete the new Portia Harbor.
Complete South Block.
Fail at cooking 1 time.
Opening Of The Museum
Find a diamond.
Help build the Portia Bridge.
Provide 100 Data Discs to the Church of the Light.
Adopt Pinky.
Help the Portia Tree Farm be operational again.
Provide 100 Data Discs to the Research Center.
Did I just use the Blender to mix feces...?
Help fix Ack the living AI.
Open 50 treasure chests.
Cut down 200 trees.
Talk with other town folks over 500 times.
Accumulate 10,000 Gols.
The first photo taken with someone else.
Pick up 7 gifts during the Day of the Bright Sun event.
Pass the test to enter the Collapsed Wasteland.
Forced to sleep at 3:00 in the morning.
Discover a mysterious room in Abandoned Ruins.
Enter the Abandoned Ruins for the first time.
Register your workshop.
Arrive at Portia.