Only obtainable whilst playing as Izzy
To Leap to Izzy hold and press
Press to equip the Shattergun
Fire at 3+ enemies who are within close range of each other. When they are crystallized they will be connected to each other. The higher level Izzy is the higher the chance of her shattering all enemies with continued fire from the Shattergun. You can use a grenade instead to get the simultaneous kills.
Good spot: Chapter 2, Checkpoint 2 (And I Gazed Into The Abyss…) when the riot shield guys first appear. There should be 5 guys side by side. Throw a grenade then crystallize them by firing directly at their shields. The grenade will then kill all 3+ simultaneously.
Also found early on in Deveraux’s Hideout in Echelon Mode.