Assault on Olympus

The Assault on Olympus was a major battle that marked the defeat of the Olympians and destroyed the Olympus Gateway. The assault was numerous years in the planning as it was well guarded by Olympians and demi-gods.

Shortly after the alliance of hell

A small contingent of succubi went out into the mortal plane to help raise an army. Succubi are naturally good at infiltrating institutions as they can change form to look like anyone, and use the power of seduction to persuade targets to do the bidding of the succubus. Slowly, the succubi, led by Queen Igret, started corrupting many powerful human leaders and infiltrating the religion set up by the Olympians. Meanwhile, demons would randomly attack Olympian institutions in small groups. This had the effect of distracting the Olympians from the dark works of Igret working behind the scenes.

Eventually, Igret managed to weaken the Olympian worship system by seeing discord between the different temples belonging to different Olympians. She also managed to raise an army for the secret assault.

The Assault
Igret believed that if the Olympians could be distracted long enough, a surprise attack could break through and destroy the gateway. With the gateway destroyed, the Olympians could no longer reinforce their numbers.

The gateway itself required a constant energy supply of both chaos and heaven fire to keep running. Igret knew that if a great energy source were provided, the Olympians would jump at the opportunity. She sent both Stheno and Euryale as "bait" to distract the Olympians. At this point both women had had their memories erased and believed they were succubi. They were tasked with posing as mortals and then taking out as many of the outpost's defenses as they could.