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