Requiem Mods and Requiem Relics are new additions to the game, introduced with Update 26, The Old Blood. They are the only thing that can kill your Kuva Lich, and they need to be used in the correct combination on your Parazon to kill the Kuva Lich using a Mercy Finisher. While normal weapons, and your teammates, can damage it, the Lich will be weak to a certain combination of the mods, and only a strike with that combination can kill it.
To find out the combination, you need to kill a Lich’s Thralls with the Parazon and collect Murmurs. As you collect enough, once of the mods in the combination will be revealed. You’ll need to collect Murmurs until you know all three, then experiment with the combination on the Lich until you get the correct one.
Warframe – How To Get Requiem Relics and Requiem Mods
The Requiem Mods, listed below, are obtained from new Requiem Relics. These new Relics can be earned from Kuva Flood as a guaranteed reward, as well as from Kuva Siphons at a 50 percent drop rate. They also have a small chance to drop from Thrall kills, at 5 percent. They are then refined in Void Fissure missions on the Kuva Fortress. These are the only Relics that can be refined on the Kuva Fortress, and are the only Relics that can be opened in the Void Fissure missions that take place there.
When refined, the Requiem Relics will open and can drop a Requiem Mod for your Parazon. There are four types of Relics–I, II, III, and IV–which are shown on a new screen in your Relic menu, which you can access from the Relic console in your Orbiter.
Requiem Relics can also drop an item called a Riven Sliver. These Riven Slivers can be combined to create a complete Riven.
Requiem Mods have limited charges, with three each, and one is used up when you kill a Kuva Lich with it. When all charges are used, the Mod can be broken down into Endo. You can also combine random, spent Requiem mods to create a new mod.
From brooding gulfs are we beheld
By that which bears no name
Its heralds are the stars it fells
The sky and Earth aflame
Corporeal laws are unwrit
As suns and love retreat
To cosmic madness laws submit
Though stalwart minds entreat
In luminous space blackened stars
They gaze, accuse, deny
Roiling, moaning, this realm of ours
In madness lost shall die
Carrion hordes trill their profane
Accord with eldritch plans
To cosmic forms from tangent planes
We end as we began