Here is the full list of all 12 Elliot (Story One) - My First Date RPG trophies - there are 11 gold and 1 platinum.
Awarded after earning all other trophies
Complete Elliot's introduction
Find Elliot's backpack
Start making breakfast
Talk to Elliot's dad in the morning
Finish getting ready for school
Start driving to school
Finish the day at school
Talk to Elliot's dad in the afternoon
Go to the school bus stop
Meet Oriana at the bus stop
Complete the character blog