The war was so intense that not even the resurrection of the ancient titans made the allied army pause.
There was another wave of ancient titans while they were fighting, but the gods only gave Gemmis more divinity while they continued killing orcs.
This negligence made Gemmis and many divine cities to run out of divine energy. Half of Gemmis was destroyed and some divine cities were directly uprooted before the ancient titans were killed.
The gods still didn't give up. They didn't give up either when what they had feared happened. The Apocalypse pantheon gained control of all five towers after four years of intense fighting.
At this point, they were running on fumes, but they felt they couldn't retreat after losing so much. Besides, if the Apocalypse Pantheon could achieve this while being besieged on all sides, what would they be capable of when the gods retreated?