Robots fight each other, sometimes to the death. Arms are severed, a head and spine are ripped out, a robot's head is smashed in (offscreen). A robot's life force is stolen.
Some Autobots and Maximals in the final battle are seen killing Terrorcons with blasters, blades, etc.
A man stands in front of a wall that explodes. It is implied that he dies but no blood or gore is seen.
During a car chase, multiple cars are seen crashing or rolling over in extreme ways. The aftermath (and what happened to the drivers) are not seen.