Gods were immortal.
Even if the gods were killed by accident, they would be revived shortly after.
Given that Divine Power was limited in the Pantheon Continent, the God-queen Carulla could not be killed. Even in the Ruler of Gods' Palace, no matter how hard Li Yi and others attacked, they would not be able to kill her. The same went for the Evil God.
Li Yi and others ganging up on them could, at best, reduce their HP to 1.
At the time of unsealing the Evil God Summoning Scroll, the Evil God had mentioned to Li Yi that the Ruler of Gods' Palace on Mount Pantheon was the source of the power of the gods. The secrets to Ascension lay hidden in it.
"The gods are immortal, O lowly mortal. Once my strength is restored, I shall turn you into dust!"
Carulla cried angrily.