Here is the full list of all 31 My Time at Portia trophies - there are 10 bronze, 16 silver, 4 gold and 1 platinum.
Unlock all of the Trophies.
Expand the land area of the workshop to the maximum.
Finish the main storyline.
Workshop reputation reaches Level S.
Complete the new Portia Harbor.
Accept Gust's proposal.
Getting divorced.
Complete Phyllis's Dream
Gather 50 assembly diagrams.
Complete South Block.
Get Married.
Find a diamond.
Be ranked number one in a seasonal workshop ranking.
Opening Of The Museum
Help build the Portia Bridge.
Play the seesaw and get your playmate to catch a bird.
Keep the spiciness of the hotpot above 85 for 10 seconds during the Winter Solstice festival.
You missed a date.
Help fix Ack the living AI.
Help the Portia Tree Farm be operational again.
Adopt Pinky.
Fail at cooking 1 time.
Complete all five Dee-dee transport commissions.
Give out a gift that the other person doesn't like.
Forced to sleep at 3:00 in the morning.
The first photo taken with someone else.
Pass the test to enter the Collapsed Wasteland.
Discover 1 mysterious rooms in Abandoned Ruins.
Enter the Abandoned Ruins for the first time.
Register your workshop.
Arrive at Portia.