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