Clear Round 2 and watch the first intermission

Clear Round 5 and watch the second intermission

Clear Round 8 and reach Round 9

Clear Round 9 and watch the third intermission

Clear Round 13 and watch the fourth intermission

Clear Round 17 and watch the last intermission

Clear Round 20 and reach Round 21, also known as the "Ninth Key" round

Beat the initial high score of 10,000 points

Score 20,000 points

Eat a cherry twice

Eat a Power Pellet, then eat every ghost before it runs out

Eat every pellet in a maze except for the Power Pellets