Here's a breakdown of the Bayhem taking place in the scenes we can figure out:
- Giant spaceship exits smoke and fog, with robot character advancing menacingly on foot beneath it, possibly LOCKDOWN/GALVATRON?
- Tessa and Cade are clearly caught in the middle of a fight between 'Lockdown' and OPTIMUS PRIME, who proceeds to get shot through the chest by his opponent -- as 'Galvatron's' face turns into a gun.
- Different scene, different robot character - possibly STINGER - slices through a red car, as a fleet of spaceships heads towards Earth.
- Shane, Cade and Tessa flee from a series of massive explosions.
- Upside down OPTIMUS, held captive by another robot, who appears to be retracting an arm weapon.
- CROSSHAIRS para-shooting between some flying vehicles.
- Tessa cries out for her dad, Cade, as she appears trapped in a car. Cade runs towards her, and prepares to punch something in slow-motion.
- Optimus rolls sideways out of an explosion's way.
- BUMBLEBEE jumps upwards, also out of an explosion's way -- and is met by double-headed flying STRAFE!
- Optimus shown sword in hand, riding GRIMLOCK, who appears to be made out of limey, mossy rock, as they burst out of Chinese architecture.