Insanity Strike is a safe Power-up in Sly 2: Band of Thieves and a buy-able power-up in Sly 3: Honor Among Thieves. In Sly 2, only Sly Cooper can use it, whereas in Sly 3, only Bentley can use it. In Sly 2, the only way to get it is to unlock the Episode 2: A Starry Eyed Encounter vault, which the code is 857. Sly sets his cane or Bentley sets his wheelchair to hit multiple guards so they can attack each other. This move is like the Voltage Attack move for Sly,since he does the same general action of tapping his cane, and the power-up is in effect. You must also knock the guard out so they will turn against each other. A great Combo is use this, then use Knockout Dive to knock them out for sure.