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