Earth 3

Earth 3 was an alternate reality created after Bruce and Tony went back in time and stole the reality stone from Strange, which Exile reacted to, by killing Strange. As a result, Exile ended up being able to win the war, along with the three other villains.

During the timeline, Exile slaughtered billions, and the heroes were forced to fight for their lives against Exile's soldiers. Exile was able to turn Doctor Fate into a battle machine, who killed the Thor of this timeline, and killed multiple soldiers on Sanghelios.

Fate eventually was killed by Red Hood, and the war raged on. Eventually, the heroes went to Sanghelios to battle Exile and his army, and lost the battle after the good Doctor Fate came back to life, along with multiple others, and was killed. Exile took Doctor Fate's helmet and blew up Sanghelios, causing multiple people to be killed.

The Guardians of the Galaxy got to Rorschach in time, and were able to get him to Mars, where he would stay with Manhattan, safely. After that, Exile will probably find more planets, and kill more humans. That's the end.