Unlock A Bonus Video
Collect 4 crimson chin cards and you should unlock a bonus.

Kill Vicky in the Ultimate Challenge
After you start the challenge, dodge her fire balls then have her jump on the star. Then, have her jump on the X, followed by the hand, the book, and the hat.

Secret Passage
If your on Vicky Virus level and your driving the hovercraft when you get done with the challenge stay in the hovercraft. Go straight and then left then right, you will see a passage with crowns, get all the crowns and go to the end of the passage. If you look left you will see more crowns get them keep going straight and exit. Note: Keep looking around for more passages on land in the area plus crowns.

Completing Vicky's H.W. level 2
Find five stars, then make a wish. Timmy will wish for a hammer. If you are facing the boats, turn right. However, if you are not facing the boats, make a left.

Defeating Vicky in the Ultimate Challenge
After you start the challenge, dodge her fire balls then have her jump on the star. Then, have her jump on the X, followed by the hand, the book, and the hat.