Slitherine has delivered the first-ever single-player campaign DLC for Battlesector. All prior content focused on multiplayer or skirmish additions – new units and factions. Deeds of the Fallen breaks that pattern. It gives solo players a serious narrative experience.
This expansion takes place on Ashenfell, once an industrial world powered by lava flows. Now it lies cold, its manufactorums silent, its surface covered in ash and ice. Here, the Sisters of Battle lead a twelve-mission campaign against an Ork invasion. For the first time, you take command of a specific order, Canoness Selicia of the Order of Our Martyred Lady, supported by Sister Hospitaller Dorentia and elite Zephyrim troops.
The campaign showcases three new Sisters of Battle units: Zephyrim jump infantry, the inspirational Imagifier, and the heavy-duty Castigator Battle Tank. These units reinforce the rigid devotion of the order and tie narrative focus to gameplay stakes.
Battlesector’s skirmish mode has always been its strongest feature, offering custom matches, faction variety, and AI battles. This DLC flips the script. It centres on storytelling, scripted objectives, voice work, and character arcs framed by grim decisions. The Orks are the enemy this time, replacing the Tyranids from the base game, and the battlefield feels different. It recalls what we praised in the base campaign: atmosphere over spectacle, narrative weight over brute force.
We’ve spotted environmental triggers that shift depending on actions. Orks swarm in predictable waves, but may retreat or change formation based on your choices. Value lies in timing, not firepower. Slitherine has said future updates will support Crusade mode and free units, but Deeds of the Fallen stands alone as the first serious single-player story campaign since launch.
The tone is grim. Sisters ask you to sacrifice lives for a war that’s already cost them everything. You choose where to send reinforcements and who to save. Expect prayer, agony, and revelations buried in ash. There are no shiny endings. The campaign rides on momentum, yes. But it guides you through suffering and silence.
This DLC reframes Battlesector as more than just a tactics sandbox. It proves the game can deliver narrative weight when required, and it answers a community demand for solo play with focus and gravitas. If Slitherine continues this trend, Battlesector could transform from a well-oiled machine into a platform capable of real storytelling.
