Sonic Forces - Sonic Sr II and Master Chief's Long Journey - Composer and Didact's Death

After the Composer is fired and kills all on the base aside from him. He takes a Broadsword to follow the Didact to Earth, where he is assisted by Infinity, which is now controlled by Commander Lasky is selected as a captain by Sonic Sr II, in getting inside with Sonic Sr II helping him. There, the Didact fires the Composer, and extermination of Humanity begins in New Phoenix in which after they were evacuated by the UNSC. In order to bring down the Didact's shields, Cortana clones her rampant personalities to overload the system. John places her chip in a holopedestal, but it is destroyed, and she is brought into the Composer's system. She manages to weakly communicate with Sonic Sr II and John before John managed to defeat the Didact by putting the pulse grenade which explodes before Sonic Sr II kills him with the Energy Sword by stabbing him in Didact's stomach before slicing his head off while Chief destroys the Composer with the HAVOK bomb thus ending the extermination of Humanity and freeing Covenant from Didact's control as well as avenging the A.I. Cortana, UNSC Forward Unto Dawn and the UNSC scientists. She uses the last of her energy to form herself into a visible form and touches Sonic Sr II and John for the first and last time. She dies right before the Composer collapses around them.