Lords of the Fallen boss guide: How to defeat Harrower Dervla, the Pledged Knight

In Lords of the Fallen's Mournstead lies a hidden location called the Revelation Depths. Although this area is not essential to the main plot of the game, it's worth exploring if you want to unlock the Umbral ending. Harrower Dervla, the Pledged Knight, is the protector of the area's core. She is a daunting adversary, and your fight with her is divided into two distinct phases.

This guide will clue you in on the best way to overcome the Pledged Knight, Harrower Dervla, in Lords of the Fallen.

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Harrower Dervla, the Pledged Knight in Lords of the Fallen: Location

In Lords of the Fallen, the Drainage Control Key is a critical item to reach the Revelation Depths, where you can find Harrower Dervla. It is dropped by the Skinstealer, and to face this foe, you must first journey from the Sunless Skein and travel beneath the cistern.

To come across Harrower Dervla, follow these steps:

• Defeat the Skinstealer first, and then head to the area where the cistern is located.
• Attain the Drainage Control Key.
• The Cistern's water level can be reduced with the help of this specific key.
• The Revelation Depths will be open for exploration once the water level recedes.

You will encounter Harrower Dervla in the depths of the Revelation. However, make sure to rest at the hidden Vestige of Lost Berescu before heading into the battle. It is hidden just below the wooden elevator, which rises to the Sunless Skein.

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How to defeat Harrower Dervla in Lords of the Fallen

Phase 1

Harrower Dervla in Lords of the Fallen's first phase is a double-enemy combo. Dervla, the wielder of a gigantic sword and a light crossbow, will charge at you on the lower level. In the meantime, a diminutive Umbral child will hurl spells at you from afar.

It's worth mentioning that you can always tell when the child is throwing magic your way because it emits a peculiar sound. Plus, there's a neat little trick where the child can enhance Dervla's abilities. Subsequently, her sword will deal with an energy beam attack, and her crossbow bolts will have explosive potential.

Both the sword strikes and crossbow bolts are easy to dodge and often leave her open if you can close the distance. To avoid getting hit more often by her bolts, it's best not to stay too far away.

However, even if you do stay close, she might ruin the massive stone pillars that could save you from her Umbral magic sword. In that case, it's important to be on the lookout for hiding spots that are still intact.

Summon an ally in Lords of the Fallen to help you during Dervla's fight if you're having a tough time so that they can draw the boss' focus away from you.

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Phase 2

Comment byu/False_Adhesiveness40 from discussion inLordsoftheFallen

The child will emerge from its perch after Harrower Dervla's first phase is conquered, and the resulting merger gives way to The Unbroken Promise in the second phase of the fight. Fortunately, this phase of the boss is sluggish, and there’s no need to be concerned about being ambushed by spells.

During the opening moments of the fight, it is highly advisable to stay either to the left or right. As The Unbroken Promise often unleashes an incredibly powerful energy wave straight ahead, avoiding it is essential. Additionally, magical spikes summoned by The Unbroken Promise can also make it challenging to approach them.

Thankfully, utilizing ranged weaponry can make this part of the battle in Lords of the Fallen significantly more manageable. These magical spikes will soon be sent by the monstrous entity to attack you. Moving around should keep you clear of them.

The creature can also have its spikes rotate around it, allowing for ranged attacks but making it difficult to approach.

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Rewards for defeating Harrower Dervla in Lords of the Fallen

Comment byu/Special-Werewolf8558 from discussion inLordsoftheFallen

The following are the rewards for defeating Harrower Dervla in Lords of the Fallen:

• Harrower Dervla’s Rosary
• Dark Crusader’s Call
• Ammunition Satchel
• Vestige Seed
• Eight Umbral Scourings

Keep an eye out for the Umbral Scourge near the child's shrine where Dervla was defeated, as it can be traded with Mohlu for Dervla's Remembrance and other rare items.

From Molhu, buy the Umbral Scouring Clump with 50 Umbral Scourings. Toss it in the well by the shrine and visit Putrid Mother, the Umbral Goddess. This will lead you to the Putrid Child ending of the game. By completing this step, you'll have the chance to purchase an armor set that boasts high defense in Lords of the Fallen.