First, you have to unlock the basement by completing 'Bowser in the Dark World' (get 12 stars first). Then, in the basement, you have to unlock the second floor by getting 30 stars and completing 'Bowser in the Fire Sea'. Then, to unlock the top floor, obtain 50 stars and go up the set of stairs on the second floor. Go through the door and you are now on the top floor. (Get 70 stars to get up the endless stairs to 'Bowser in the Sky', complete the level and you have won the game). Result!
Get 12 stars and go to thee star door as Mario and beat Bowser. Theen go to the door Wittgenstein no star on it . Go down . Then you can enter. Hope this helps
With 2 stars.
What to do for 2 stars:
1)Go to Bob-Omb Battlefield and finish Star 1.
2)Finish Star 2.
*you did it*
If Luigi enters the room on the third floor with the mirrors, he will find Power Flowers on top of the pillars. Grab one of them and walk through the mirror. Then jump into the picture of Wario.
You must have 50 stars to enter the third floor of the castle. When you claim the spiral stair case after defeating Bowser 2 turn right and jump through the painting this will take you to the 3rd floor.
You have to get enough stars to unlock the star door(the one where peach is crying out for Mario) and when you beat Bowser you'll get a key for the basement type area. To get there you go through one of the doors underneath the stairs and go down the stairs there and unlock it.Then you get enough stars to unlock the next star door and then you beat Bowser again and then you will get a key for the door leading to the third floor,or second floor in your case.
To get Wario + a star:Go to the third floor (with Luigi) and go into the room with the mirrors. Get a flower off of the pedestal and go through the mirror. To get an extra star, go into the door. Then go into the painting of Wario (to the right).To beat Chief Chilly:Punch him 3 times (easier as Mario) but be careful! He will jump and the sides of the course will fall off.
Get at least third in the levels you got.
So far, there have been no announced plans for a third Super Mario Galaxy game.
On what level?
No there wont be, but the third paper Mario will be for the WII and is called super paper Mario
Bowser's Third Castle
Third one is in stores right now.
Collect fifty Power Stars.
in your neck