The Throne of Lies was not alone.
The dreadnought was accompanied by many escorts. Their sole mission was to prevent any alien unit from threatening the nearly irreplaceable monument of human power.
All kinds of smaller but still fairly powerful cruisers and destroyers saturated the coordinates of the Darkstar King with weapons fire!
The relatively short range should have caused the attacks to hit their targets with at least 90 percent accuracy, but the reality was that only 14 percent managed to strike the spatial barrier of the Darkstar King.
Shortly after the formidable orven phase lord bypassed the human ace mechs, he summoned an array of weaker but more sustained gravity wells.
These gravity wells bent the spacetime in the surrounding area. This caused every incoming attack to follow crooked trajectories.