One interesting point from the lore is Anakin’s advice to Ahsoka Tano, on how to take on these deadly opponents, 'Destroyers are blind from behind. As seen in the trailer, the Droidekas look to be faithful to their on-screen depictions, packing twin blasters and shield generators that can make quick work of foes at the cost of mobility, but quickly can to transform their shape by curling into a ball and moving swiftly across a surface, meaning that they can enter battle as if from nowhere and set up to be a dominating force.
