Full list of all 59 Back to the Future: The Game - 30th Anniversary Edition achievements worth 1,000 gamerscore. It takes around 12-15 hours to unlock all of the achievements on Xbox 360.
Achievements they've won
Achievements they've not won
Prevent the fire.
Solve the saloon puzzle with no more than two trips to the second floor.
Restore Edna's memory.
Look for the desert plant.
Give Edna a treat.
Record everyone at the Expo.
Impersonate three people over the phone.
Complete the glass house maze without going back up the stairs.
Get your money's worth at the Expo.
Bust a move, 80's style.
Free Emmett from the courthouse.
Help Emmett's broken heart.
Break Edna's heart.
Take the fewest possible trips to Emmett's lab.
Mess with Emmett's cleanser.
Get Trixie mad.
Tell the Doc truth.
Reveal a "Degenerate Criminal."
Reveal the Hill Valley hooliganism rate.
Treats for all.
Get a good look at Trixie's postcard.
Rescue Citizen Brown.
Escape from Marty's cell.
Laid out Biff.
Examined every container of contraband in the speakeasy.
Jump into the Decycling Bin.
Get caught making out with Jennifer.
Collect every Demerit in the game.
Get caught with Lorraine's booze.
Get caught with Einstein.
Tag Marty's band name.
Listen to all tourist audio guides in Hill Valley.
Get Edna out of the courthouse.
Used the DeLorean parts to enter Hill Valley.
Defeat the Kid.
Get a gangster's girl to do the right thing.
Find a hidden passageway.
Found "Chuckles Lenart".
Dry a cop out.
Enjoy a full set from Hill Valley's leading songstress.
Break the password code without cheating.
Get a full explanation of your situation.
Defeat the Tannen Brothers in six jumps.
Rescue Arthur with minimal fuss.
Track down a missing accountant.
Complete Episode 1.
A hole in the wall.
No mistakes when making rocket fuel.
Serve the subpoeana.
Deliever the goods.
Talk him into it.
Chat with Carl Sagan.
Travel back in time to rescue Doc.
In the movie they said.
Get Doc's Notebook.