Build up the ball past 1m32cm3mm before the time runs out in Make a Star 4.
Get Eternal 2
Build up the ball past 25m before the time runs out in Make a Star 8.
Get Eternal 3
Build up the ball past 800m before the time runs out in Make the Moon.
Moon Memorial
Complete the Make the Moon stage.
Unlock bonuses
Complete all levels except for the Eternal levels. Then, press Triangle at the Earth screen for a sound test and FMV sequence viewer.
Unlock Shooting Stars
Unlock shooting stars when viewing a particular constellation on the Prince's homeworld (the view constellation option) by meeting the katamari's diameter within the following time limits:
Star 1 - Under 1 minute
Star 2 - Under 3 minutes
Star 3 - Under 4 minutes
Star 4 - Under 6 minutes
Star 5 - Under 8 minutes
Star 6 - Under 8 minutes
Star 7 - Under 8 minutes
Star 8 - Under 12 minutes
Star 9 - Under 15 minutes
Moon - Under 20 minutes