Here is the full list of all 59 Back to the Future: The Game - there are 30th Anniversary Edition achievements worth 1,000 gamerscore.
Returned home.
Prevented the Great Hill Valley Fire.
Restored Edna's memory.
Emmett completes his spectacular failure at the Expo.
Marty and Emmett head to the Expo.
Gave Emmett his Epiphany.
Broke up Emmett and Edna.
Messed with Emmett's cleanser.
Got Trixie ready to make Edna jealous.
Crafted a mind map of Emmett that reveals him to be a "Degenerate Criminal."
Rescued Citizen Brown from the Citizen Plus program.
Escaped from Marty's cell.
Layout Biff and escape the speakeasy.
Jumped into the Decycling Bin.
Got caught making out with Jennifer.
Got caught with Lorraine's booze.
Got caught with Einstein.
Used the DeLorean parts to enter Hill Valley.
Defeated Kid Tannen.
Got a gangster's girl to do the right thing.
Dried a cop out.
Enjoyed a full set from Hill Valley's leading songstress.
Broke the password code without cheating.
Tracked down a missing accountant.
Rescued Doc from Kid Tannen.
Acquired Emmett's Rocket Drill.
Managed to get 190-proof alcohol delivered to Emmett's.
Delivered the subpoeana to Arthur McFly.
Talked Emmett into completing the Rocket Drill.
Namechecked "Back to the Future" creators.
Traveled back in time to rescue Doc.
Got Doc's Notebook back from Biff.
Perfectly repeated dialog while repeating Doc's temporal experiment.
Chat with Carl Sagan.
No mistakes when making rocket fuel.
Ema's Marshall.
Find a hidden passageway.
Defeat the Tannen Brothers in six jumps.
Rescue Arthur with minimal fuss.
Find "Chuckles Lenart".
Get a full explanation of your situation.
Listen to all tourist audio guides in Hill Valley.
Collect every Demerit in the game.
Tag Marty's band name.
Examine every container of contraband in the speakeasy.
Get Edna out of the courthouse.
Treats for all.
Reveal the Hill Valley hooliganism rate.
Tell the Doc truth.
Take the fewest possible trips to Emmett's lab.
Get a good look at Trixie's postcard.
Give Edna a treat.
Look for the desert plant.
Complete the glass house maze without going back up the stairs.
Impersonate three people over the phone.
Record everyone at the Expo.
Get your money's worth at the Expo.
Solve the saloon puzzle with no more than two trips to the second floor.
Bust a move, 80's style.