Here is the full list of all 31 My Time at Sandrock trophies - there are 14 bronze, 11 silver, 5 gold and 1 platinum.
My Time at Sandrock!
Workshop upgraded to 5 stars.
Have your workshop ranked as #1 for the month.
Complete 100 Commissions.
Get 10,000 Gols.
Unlock 50 backpack slots.
Have 20 duels.
Defeat 20 elite monsters.
Clean up trash 50 times.
Kick something from trees 50 times.
Open 50 chests.
Done 40 exhibits to the museum.
Obtain 1 diamond.
Pick up feces 50 times.
Have a romantic relationship with any character.
Marry any character.
Chat 200 times.
Give 100 gifts.
Give a hated gift.
Make friends with 10 people.
Won first place in the ghost hunting event.
Won first place on the hardest difficulty in the dance contest.
Get 500 Game Center coins.
Never going to stay up all night again...
Use 500 stamina in one day.
Successfully registered the workshop.
Assemble and install the Crane Lift.
Make a Hydrogel.
Repair the Shonash bridge.
Repair the Water Tower.
Find all of Mort's photos.