How do you beat the baby ghost?

Suck up all of the teddy bears first. Then take the ball and aim it at the baby and fire it. To fire the ball, press the L button. Then as he takes you in his crib, avoid all of the items and take the real ball and hit him with it (a bunch of balls will come at you but only one of them stays in the crib with you). Suck him in when he becomes vulnerable. Repeat the crib step until he's done.

You will see him sleeping in a crib. To wake him up, use the Poltergust 3000 to rock the wooden horse back and forth to make him want to play with it. He'll appear near it and ask you to play with him. (his play game is really attacking you.) He will eaither come twoard you or make a teddy bear come to you. Be careful and suck up the ball, shoot it at him and he will get mad and turn you into a tiny dude in the crib. Avoid his rocking horses. Then avoid all the balls coming at you. Suck up the ball that is still there and shoot it at him to make him show his heart. Then try to vacuum him up. WARNING: if you make his power 49 or under, his horse become fast at you. Stand right in front of him after the first two so you'll avoid the two coming at once.

To beat baby ghost when he throw the ball suck it up and then blow it back at him.

To beat Chauncey, first to start the boss battle, vacuum the horse making it rock and Chauncey will appear and he asks if he wants to play with you, say yes. Then vacuum the ball in his room and release it at him and that will start the boss fight. In the boss fight watch out for his horses they move faster after sucking halfway of his health. When the balls appear one of them remain throw it at Chauncey.

First your have to vacuum the rocking chair until Chauncey (The baby) wakes up. Then you have to suck up the ball, and shoot it at Chauncey, which will start a new fight in his crib. Once in the crib avoid his attacks until he throws multiple balls at you, avoid them, suck up the real one and shoot it at Chauncey, which will reveal his heart. Note that when you are not in his crib, he will attempt to throw teddy bears at you and punch you.