Uul'nath, Lightcleanser

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Uul'nath, Lightcleanser
Biographical information




Lucent Brood




Lightbearer Knight

Combat information


PsiOps Battleground: Cosmodrome


ArcS.png Boomer
VoidS.png Suppressor Grenade


Towering Barricade
VoidS.png Sentinel Shield
High Durability
Rapid Movement
Immunity Shield
KineticS.png Hive Melee


Uul'nath, Lightcleanser is a Hive Lightbearer Knight Lieutenant who ran an operation to stockpile and purify Light for the Lucent Brood. They appear in the PsiOps Battleground: Cosmodrome activity, where they are faced as the final boss.[1]


Uul'nath is encountered at the end of the Psi Ops Battlegrounds: Cosmodrome activity. Upon reaching them, two Wizards will spawn behind the boss to provide backup for them. Uul'nath makes use of a Boomer and Suppressor Grenades, and can create a Towering Barricade as cover while firing at you. They can also summon Sentinel Shields to ram and throw at players when they have enough energy, indicated by their eye color changing from a green glow to purple. After sustaining enough damage, the Lieutenant will be subdued by two Imperial Optus Psions, who will teleport the Fireteam to the Mindscape.

Upon entering the Mindscape, players must initiate the boss fight by interacting with the relic in the center of the arena. Uul'nath will then arrive, followed by Hive Tombships and a large number of reinforcements. Once the Lightcleanser's health has been decreased by a third, they will summon an immunity shield and retreat via teleportation. An Aspect of Savathûn will then spawn, which must be killed with the Synaptic Spear in order to progress to the next phase of the boss fight. The fireteam will have to have to fight and defeat two Aspects after Uul'nath has lost another third of their. Like the first time, the spear must be used to kill them so you can move on to the last boss phase. After this, players are free to finish off Uul'nath. Once their Ghost is destroyed, which will bring them back if given the chance, the fireteam will arrive back in the Cosmodrome to witness the now captured Lieutenant be taken away by the Psion Opti.