The thing that separates this game from KD is that every level has a goal, whether it is displayed to the player or not. That means that you can quit out of every level after reaching the goal, even in object collection levels. So you never have to wait out the timer like in KD constellations.
Tutorial Goal: Roll up Ace Ace and the ball are 2 different objects, the ball is bigger than him
As Large as Possible 1 Goal: 15cm
As Large as Possible 2 Goal: 40cm
Underwater Goal: 80cm
Flowers Goal: 617 (50%)
Sun (first) Goal: Fail This level is unwinnable, so immediately go for the sun without doing anything else
As Large as Possible 3 Goal: 3m
School Goal: 1.5m
House Goal: 100 objects There are 100 objects and you need all of them
Friends Goal: 150 (50%)
Snowman Goal: None Immediately go to the snowball in the center
As Large as Possible 4 Goal: 12m
Racetrack Goal: 5m
Campfire Goal: Collect the bonfire (1.5m)
Sweets house Goal: Collect both fans (1.33m I think, or maybe it was 1.30m)
Cranes Goal: 600 (60%)
50 objects Goal: 50 objects Doesn't matter what you collect, any 50 will end it
Sumo Goal: Knock out sumo opponent (133kg)
Cowbear Goal: ( ͡° ͜ʖ ͡°)
Fireflies Goal: Collect the fan (1.5m)
Saturn Goal: 10cm Your size is not shown on screen and if you try to exit before 10cm then you get a long text box
Pandas Goal: $10
As Large as Possible 5 Goal: 500m
Clouds Goal: 50 (10%)
Sun (second) Goal: Collect the Sun It's technically a size level, see my notes here: https://www.speedrun.com/We_Love_Katamari/thread/sq1qt