In the ensuing duel, Optimus kills Attinger, avenging the deaths of his fellow Autobots, allowing Lockdown to pin Optimus down by impaling him through the chest with his own sword, damaging his spark.
Optimus kills Attinger, avenging the deaths of his fellow Autobots, allowing Lockdown to pin Optimus down by impaling him through the chest with his own sword, damaging his spark. This is in the ensuing duel.