Use the Falling Star attack on the Dark Star when he turns into a ball. When the Dark Satellmites aren't there and you can't damage the Dark Star then use a mushroom or syrup jar. I recomend using the Powerful Badge and the Exellent!! Badge. Then you can do 4 times the damage when the meter's full. (Use it only when the Dark Star is a ball) Hope I helped!
You can get Beans, and an SP: Magic Window.
You can only do it with Mario and Luigi. For Mario, press A. For Luigi, press B.
no
not really
noone
You have to complete the pumpworks level
There are only 2 files in Mario and Luigi Bowser's Inside Story.
you have to hit the shell block.
on the map
By defeating him in battle.
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by eating lots of shrooms