The Unbroken Promise Lords of the Fallen
x1 Vestige Seed
x8 Umbral Scouring
x1 Harrower Dervla's Rosary
x1 Dark Crusader's Call
x1 Ammunition Satchel
Soulflay the Stigma after the Boss Encounter to gain the following items:
Remembrance of the Unbroken Promise
x2 Umbral Scouring
Bring the Remembrance of the Unbroken Promise to Molhu in exchange for the following items:
Harrower Dervla's Sword
Harrower Dervla's Crossbow
Harrower Gauntlets
Harrower Armour
Harrower Helm
Harrower Leggings
Martyr's Shackles
Martyrdom
Barrage of Echoes
The Unbroken Promise uses the same body as Dervla, so she wields the same sword with some enhanced attacks that add range and size. Sword strikes now produce slash projectiles and a sword strike on the ground will emit a shockwave of energy that can be blocked, but will cause Wither. The Unbroken Promise will have a larger reach, but can be treated similarly to how Dervla was dealt with until the second phase.
PHASE 2
When approaching half health, The Unbroken Promise will have two bolts or nails hovering over her attached to her chains and shackles. These have their own set of attacks that can hover separately and strike down. These bolts will have homing abilities that will trail you and strike for a brief period. They also have another attack where they continuously strike down while trailing the player. You will need to continuously run until they reattach themself. A majority of the other attacks are directional ranged attacks also relying on the hovering bolts. They are usually linear and you will be able to track the path or anticipate the direction if you are spaced enough from The Unbroken Promise. Playesr will need to be conservative with their stamina since these are quick projectiles. You will need dodge to either side of these attack paths to avoid taking damage. Backing up will not take you out of the path of damage since they have a long range. It will be difficult to approach The Unbroken Promise during this phase, but there will be openings in between attacks or even during some attacks if you manage to avoid the path of her ranged attacks. She will not deploy another attack as one is being played out. So, while a ranged or projectile attack is being dealt, you an try to circle behind her to begin your attacks.
Keep rotating around The Unbroken Promises to decrease the chances of getting caught in the paths of her linear ranged attacks. You can then adjust your proximity as you go dnd roll out of the way for more immediate attacks. This fight is more easily completed with a companion to direct The Unbroken Promise so that one can focus on flanking her while she continues to fire her projectiles and ranged slash attacks.
This video shows how to The Unbroken Promise Lords of the Fallen
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