Survive the trip to Lou's Cafe. Good job.

Survive the trip to the High School.

Survive the trip to the Enchant Under the Sea Dance.

Finish the game, whether you make it to 1985 or not!

Successfully travel BACK to the FUTURE!

Complete the mini-game at Lou's Cafe.

Get a PERFECT 99 score at Lou's Cafe!

Complete the mini-game at the High School.

Get a PERFECT 99 score at the High School!

Complete the mini-game at the Dance, with new music!

Never miss ANY music note at the dance!

Pick up a bowling ball for the first time.

Pick up a skateboard for the first time.

After cafe, finish entire stage with skateboard and bowling ball.

After cafe, jump at the end of a stage to get 900 points.

Successfully strike a set of bowling pins.

Finish the cafe with less than 20,000 points.

Finish the school with less than 40,000 points.

Finish the dance with less than 70,000 points.

Drive off in the DeLorean with less than 100,000 points.

After the cafe, finish a stage without dying.

Future or Bust, finish the game without dying once!

Earn 25,000 points!

Earn 50,000 points!

Earn 75,000 points!

Earn 100,000 points!

After the school, complete an entire stage without the bowling ball.

After the school, complete an entire stage without a skateboard.

After the school, collect 30 clocks in a single stage!

Collect 100 total clocks!

Collect 250 total clocks!

Collect 500 total clocks!

After the school, never shoot a clock during a single stage!

In stage 1-1, never attack a hula-hoop girl!

In stage 1-2, never attack a hula-hoop girl!

In stage 1-3, never attack a hula-hoop girl!

In stage 1-4, never attack a hula-hoop girl!

In stage 2-1, never attack a hula-hoop girl!

In stage 2-2, never attack a hula-hoop girl!

In stage 2-3, never attack a hula-hoop girl!

In stage 2-4, never attack a hula-hoop girl!

In stage 3-1, never attack a hula-hoop girl!

In stage 3-2, never attack a hula-hoop girl!

In stage 3-3, never attack a hula-hoop girl!

In stage 3-4, never attack a hula-hoop girl!

In stage 4-1, never attack a hula-hoop girl!

In stage 4-2, never attack a hula-hoop girl!

In stage 4-3, never attack a hula-hoop girl!

In stage 4-4, never attack a hula-hoop girl!

Maintain 65 to 88 MPH for about ten seconds!