Here is the full list of all 13 Back to the Future - Episode 4: Double Visions trophies - there are 9 bronze, 3 silver and 1 gold.
Take the Fewest Possible Trips to Emmett's Lab
Marty and Emmett head to the Expo.
Gave Emmett his Epiphany.
Broke up Emmett and Edna.
Messed with Emmett's Cleanser.
Offered Algae Cakes to Everyone
Crafted a Mind Map of Emmett that Reveals him to be a "Degenerate Criminal."
Got Trixie Ready to Make Edna Jealous
Get a Good Look at Trixie's Postcard
Emmett Is Prophetically Honest About His Marriage Prospects.
Revealed Hill Valley Hooliganism Rate
Rescued Citizen Brown from the Citizen Plus Program.
Escaped from Marty's Cell.