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