Back to the Future: The Game Cheats

Episode III: Citizen Brown Trophies
All Good Dogs Go To Utah (Silver): Got caught with Einstein
Final Solution (Gold): Layout Biff and escape the speakeasy.
Hidden Treasure (Bronze): Examine every container of contraband in the speakeasy
Hill Valley Tourist (Bronze): Listen to all tourist audio guides in Hill Valley
Hope You're Insured (Silver): Use the DeLorean parts to enter Hill Valley
Intervention (Silver): Got caught with Lorraine's booze
Into the Garbage Chute, McFly-boy (Silver): Jumped the Decycling Bin
Marty and the Pinheads (Bronze): Use the spray can to paint Marty's band name in the alley
One Bad Apple (Bronze): Collect every Demerit in the game
Ruin it for Everyone (Bronze): Coax Edna out of the courthouse with the buzzer
Seven Minutes in Heaven (Silver): Got caught making out with Jennifer

Episode IV: Double Visions Trophies
Complete each requirement to get the specified Trophy. There are 9 Bronze Trophies, 3 Silver Trophies and 1 Gold Trophy.

A Not-So-Beautiful Mind (Bronze): Crafted a Mind Map of Emmett that Reveals him to be a "Degenerate Criminal."
An Uncomfortable Truth (Bronze): Emmett is Prophetically Honest About His Marriage Prospects.
Breaking Up is Hard to Do (Silver): Broke up Emmett and Edna.
Edna Was Right! (Bronze): Revealed Hill Valley Hooliganism Rate
Free Citizen Brown! (Silver): Rescued Citizen Brown from the Citizen Plus Program.
Let Them Eat, Um, Cake (Bronze): Offered Algae Cakes to Everyone
Like a Not-So-Fine Wine (Bronze): Messed with Emmett's Cleanser.
The Other Woman (Bronze): Got Trixie Ready to Make Edna Jealous
The Power of Love? (Bronze): Escaped from Marty's Cell.
There's a Moose? (Bronze): Get a Good Look at Trixie's Postcard
Timely Traveller (Bronze): Take the Fewest Possible Trips to Emmett's Lab
To the Expo! (Gold): Marty and Emmett head to the Expo.
Your Own Personal Frankenstein (Silver): Gave Emmett his Epiphany.

Episode V: OUTATIME Trophies
A Prickly Pair (Bronze): Had a conversation with a cactus.
Crackpot Mended (Silver): Restored Edna's memory.
Emmett Finds His Muse (Silver): Emmett completes his spectacular failure the Expo.
False Impressions (Bronze): Impersonated three people over the phone.
Full Fair (Bronze): Get your money's worth at the Expo.
Get it on Tape (Bronze): Recorded everyone at the Expo.
Green Gobblin' (Bronze): Treated Desert Edna to an algae cake.
Moonwalker (Bronze): Busted a move, 80's style.
No Backups (Bronze): Complete the glass house maze without going back up the stairs.
Raising the Bar (Silver): Prevented the Great Hill Valley Fire.
The Future isn't Writtten (Gold): Returned home.
Two-Up (Bronze): Defuse the standoff while climbing to the second floor no more than two times.

Trophies
All trophies from DLC episodes apply to this game, resulting in a platinum trophy. The trophies are also stackable if already earned from the DLC episodes. There are 52 Bronze Trophies, 6 Silver Trophies, 1 Gold Trophy, and 1 Platinum Trophy.

Platinum Trophy (Platinum): Earn all trophies in: 'Back to the Future: The Game'