Helena: Escapes the lower keep with Demantrius, leads her friends to Acuras, falls under the Blood Lord's direct control, and regains herself when Vyr's soul shard restores her light.
Demantrius: Ancient Umtheran freed from Acuras's machinery. He destroys Blood Sorcerers with shadow, guides the group through Keph, and uses the Oriun Blade in a desperate attempt to stop Acuras.
Acuras: Lord of the Blood Sorcerers and embodiment of Keph's starving darkness. He enthralls Helena, begins a ritual over the mountaintop well, and tries to flee after being set ablaze by the Deathless Flame.
Vyr: Shatters her own X-Crystal to free Helena, relives the stolen memory inside it, destroys Acuras's well, and fights beside Demantrius.
Torrin: Leaves the battlefield to help rescue Helena, surrounds her with protective twilight, and remains beside her throughout the confrontation with Acuras.
Whisper: Locates Helena through the stone he gave her, guides the infiltration beneath Keph, and repeatedly attacks Acuras with flame-lit crossbow bolts.
Normandy Borthal: Holds the army-wide Deathless Flame together through repeated failures and finally invokes his revenant form to sustain it for one last round.
Bjorn: Directs the battle outside Keph, awakens unexpected nature magic, and joins Ernan and Cass in opening the fortress gate.
Cass: Squire fighting with the Grey Knights. She slides beneath the raised portcullis and reaches the mechanism that opens Keph to the surviving allied force.
Arthas Ventrex Elutharis and Aris Lantrosa: Blood Sorcerers who intercept Helena inside Keph. Helena spares them in exchange for their earlier restraint, and they leave together.
Ithelias: Goddess represented by the Grey Knights fighting outside Keph, many of whom die in the assault.
Sethis: Power of twilight reflected in Torrin's sanctuary and his attempt to break Acuras's hold on Helena.
Umtheras: God of Shadow associated with Demantrius, Vyr, and the Umtheran traditions behind the Oriun Blade.
Emrys Valakar: Progenitor within the Deathless Flame whose voice tells Normandy that he can hold the army's fire only once more.
Unknown Power Beneath the Well: Ancient being Acuras attempts to summon with blood and an Infernal invocation before Vyr destroys the passage.
Harbingers of Light: Divide between the siege force and the infiltration team, reunite with Helena, and risk their lives to end Acuras's rule.
Grey Knights of Ithelias: Lead the assault with flame-lit weapons and suffer severe losses while forcing a path to Keph's gate.
Evenari: Survivors of Venfallas who fight beside the knights against the army responsible for their people's ruin.
Blood Sorcerers of Keph: Acuras's deathless host, supported by harpies and war beasts and vulnerable to the chartreuse flame.
Blades of Nos: Umtheran assassins shown in the memory released from Vyr's X-Crystal while fighting a Vanari expedition in the Quiet Lands.
Vanari: Six radiant warriors who entered the Quiet Lands on an unknown mission. The final survivor's life and memories became Vyr's soul shard.
Blood Sorcerer Harpies: Aerial forces that initially attack the allied line, then turn toward the keep after Demantrius is freed.
Jackal War Beasts: Hound-like creatures within Acuras's ground army that tear into the allied formation.
Shadow Constructs: Undead figures formed from Acuras's darkness to attack Helena and Torrin near the well.
Starving Darkness: Living-seeming blackness filling Acuras's throne room and mountain passages. It swallows light and withdraws into Acuras during the battle.
Golden Vines: Vegetation Bjorn unexpectedly summons across the battlefield, accompanied by a vision connecting the magic to young Magda.
Deathless Flame: Chartreuse fire coating the allied weapons. It grants true death to Acuras's forces but flickers out after Normandy's final exertion.
Oriun Blade: Shadow weapon wielded by Vyr and summoned in a stronger form by Demantrius. Vyr uses it to break her X-Crystal, while Demantrius channels stolen essence through it.
X-Crystal Soul Shard: Crystal created when Vyr siphoned the final Vanari survivor in the Quiet Lands. Its destruction releases a light that cleanses Helena.
Helena's Vial: Vanari vessel of light that had gone dark under Acuras's control and reignites when the soul shard breaks.
Whisper's Marker Stone: Small stone previously given to Helena. Locate Object allows Whisper to follow it through Keph's distorted halls.
Flaming Oil Flask: Oil Vyr lights with the Deathless Flame and throws into the sacrificial well, contributing to its collapse.
Keph Portcullis: Fortress gate raised through Bjorn's strength and Cass's use of the internal mechanism.
Blood Thrall Bond: Acuras's blood inside Helena functions as part of her, allowing him to command her body even through protective magic.
Soul-Shard Release: Breaking Vyr's X-Crystal releases stored memories and a spark of the dead Vanari's light into Helena.
Twilight Sanctuary: Protective aura Torrin invokes around Helena, tempering Acuras's influence and shielding the group during the fight.
Locate Object: Whisper's divination finds the stone carried by Helena despite Keph's attempt to bend its passages.
Demantrius's Essence Working: Shadow magic that can destroy enemies, drain life, and empower the Oriun Blade with the vitality of nearby allies.
Acuras's Blood Ritual: Infernal invocation performed over the mountaintop well, apparently intended to bring an ancient being into the conflict.
Revenant Form: Normandy's transformation into a skeletal, flame-wreathed figure, used to force the army's Deathless Flame to remain for one final round.
Keph: Acuras's mountain fortress and the center of the allied assault.
Lower Keep: Prison and boiler passages where Whisper locates Helena and where the group first meets the freed Demantrius.
Throne Room of Starving Darkness: Vast hall concealed in living darkness, with a hidden route leading toward the mountain summit.
Mountaintop Well: Sacrificial shaft above Keph used for Acuras's summoning ritual and destroyed by Vyr during the battle.
Keph Battlefield: Ground outside the fortress where the Grey Knights and Evenari fight toward the gate under Normandy and Bjorn's leadership.
Quiet Lands: Umtheran realm of death revealed in the memories stored inside Vyr's shattered X-Crystal.
Venfallas: Ruined Evenari realm whose surviving warriors accompany the assault after its veil collapses.
Purification of the Blood of Life: Demantrius says Acuras kept him within the machinery beneath Keph to purify all blood, though the purpose of the process remains unexplained.
Demantrius's Willing Arrival: The ancient Umtheran admits he originally came to Keph willingly before becoming Acuras's prisoner.
Helena's Life for a Life: Helena spares Arthas and Aris because they previously allowed her a chance to act, ending their confrontation without another battle.
Vanari Expedition to the Quiet Lands: Six radiant warriors entered the Umtheran realm searching for something and were hunted by the Blades of Nos.
Creation of Vyr's Soul Shard: Vyr's uncontrolled hunger drained the final Vanari survivor and turned his life, light, and memories into an X-Crystal.
Battle for Keph: The allies force Acuras's army back to the gate at enormous cost while the Harbingers confront the Blood Lord above.
Collapse of the Well: Vyr's flaming oil destroys the passage through which Acuras was attempting to summon an ancient being.
Demantrius's Final Strike: Demantrius sacrifices the companions' remaining strength to attack Acuras after he turns into mist, leaving the outcome unresolved.
