This battle is about 10000 pts on each side, with the "order" side being loyal Astrates and Eldar, vs an unholy alliance of Chaos, Necrons and Tyranids. We used the rules for "the scourging" and deployed eight objectives, with two being worth 4 points, and two being worth 1 point, the rest is 2 point each. Both sides roll for who gets first turn and deploys first and the order side wins. No seize the initiative is used.
The last turn was all about securing the 4 point objective in the order side deployment zone. The battle ended in a stunning victory for the unholy alliance, with something like 10 pts to 3.