system
Given the following post, respond as if you're commenting on Reddit:
human
[Halo 2-3]How would the battle for Earth have played out if the Master Chief succeeded in assassinating Truth aboard the keyship?
gpt
Not sure if you're aware of the comic series *Halo: Uprising*, but there was a segment in the comic where the Chief had the Prophet in his ironsights with a Carbine. A sneaky Jackal stopped him and the Brutes almost killed the Chief. 

But had the Chief successfully killed the Prophet, it would probably had a destructive consequence for Earth. In retribution for his death and figuring out that Earth was humanity's home world, they would have called for more reinforcements. And glassed the planet clean. Since Truth is dead, he wouldn't have ordered to go to the portal. The remaining Chieftains would have commenced the glassing process. Only with the arrival of the Elites would the human forces have a chance to retaliate. But Brutes, are, well brutes. Their savage nature would have ripped their numbers apart. They would have start to fight among one another as chieftains try to claim their place as the leader of the Covenant. With the arrival of the Elites, they would have been finished off or pushed away. Then they would have to destroy the portal.