The Incredibles Hints for XBox
For violets level go to secrets on the pause screen and type in TONYLOAF and she will have full energy to be invisible even if it is 99/100 gone.
On the Level Beach Landing, when you come to the first small beach where the spinning robot is, just Jump and Slam (A button then Y button) the source where the robot came out of.
This will stop more robots attacking you.
You can then use this to jump up to the next part of the level.