How to Defeat Nullaeus in Midnight Season 1 (Delve Guide)

Last updated on Mar 19, 2026 at 18:25 by Neryssa 1 comment

Nullaeus is the nemesis delve boss in Midnight. Find out how to defeat him and the rewards you can unlock.

1.

Introduction

Nullaeus is the nemesis boss for delves in Midnight Season 1. Players can fight him in Torment's Rise on two difficulties for new seasonal achievements and rewards.

2.

Where is Nullaeus's Delve Located in Midnight Season 1?

The entrance to Torment's Rise where Nullaeus resides can be found in Voidstorm, between Nexus-Point Xenas and Obscurion Citadel.

/way #2405 61.17 71.37 Torment's Rise Entrance

Nullaeus Delve Entrance
3.

How to Unlock Nullaeus's Delve

You can defeat Nullaeus on two difficulties. Here's the requirements to unlock both of Nullaeus's difficulties:

  • Tier ? unlocks when you clear a Tier 7 delve with at least one life remaining during Midnight Season 1.
  • Tier ?? unlocks when you clear a Tier 10 delve with at least one life remaining during Midnight Season 1.
FAQWhat is the Recommended Item Level for Nullaeus?
To comfortably defeat the Season 1 nemesis, Blizzard recommends an average Item Level of 255 for Tier ? difficulty. The Tier ?? difficulty has no recommended average item level indicated.
4.

Setting Up Valeera

To make the most out of your companion during the fight, we recommend Valeera set up as a healer, to have access to her dispel and for the extra healing, as Nullaeus's melee hurts. If you have a reliable dispel and self healing, you can use Valeera as a DPS for the extra kick.

We recommend the following Valeera curios for Nullaeus:

  • Porcelain Blade Tip Icon Porcelain Blade Tip as the Combat Curio.
  • Overflowing Voidspire Icon Overflowing Voidspire as the Utility Curio.

Do not forget to download Deadly Boss Mods to be prepared for each of Nullaeus's casts and abilities.

5.

Nullaeus Strategy

On Tier ?, Nullaeus has a series of abilities, with a fight that mostly repeats through three intermission phases. We have a quick kill video of Nullaeus on ? difficulty below:

Throughout all phases, Nullaeus has access to the following abilities:

  • Emptiness of the Void Icon Emptiness of the Void: Inflicts lethal Shadow damage to all enemies within his room. This ability must be interrupted at all times.
  • Devouring Essence Icon Devouring Essence: Nullaeus afflicts a player with the essence of the void, inflicting Shadow damage every 2 sec for 18 sec. This cast is interruptible but as it also leaves a DoT, it is easier to dispel it (or leave Valeera to do the dispeling).
  • Imploding Strike Icon Imploding Strike is used against Tank specializations only, and deals a massive amount of Physical damage. It is recommended to always have a defensive cooldown prepared for it.

Nullaeus will always use his abilities in the following order: Devouring Essence > Emptiness of the Void > Imploding Strike (tank only), until he reaches an intermission phase.

At 75%, 50% and 25%, Nullaeus will become invulnerable, via Dread Portal Icon Dread Portal, activating one of the three Void Orbs around his room, summoning adds, and gaining access to a new ability. Each intermission ends after 30 seconds or when all adds summoned by Nullaeus are dead, whichever happens first. Your priority should be killing all adds before Nullaeus resurfaces.

5.1.

75% Intermission

  • Nullaeus summons two Razorshell Ravager, which have access to two abilities: A gap closer that deals damage via Spiny Leap Icon Spiny Leap, and a bleed via Jagged Rip Icon Jagged Rip.
  • Nullaeus himself gains access to Null Zone Icon Null Zone, which covers a third of the arena at a time with void that deals damage if stepped on.
5.2.

50% Intermission

  • Nullaeus summons seven Razorshell Ravager, which leave a stacking DoT if they get to your melee range via Poisonous Spit Icon Poisonous Spit. They have low health and are quickly nuked down.
  • Nullaeus himself gains access to Gravity Well Icon Gravity Well, which spawns a gravity orb that floats around the room. This well pulls you in if you get close, and deals heavy Shadow damage if you're close to the iris. You can outrange it, and we suggest staying on the polar opposite direction in the room (of course, keeping Null Zones in mind).
5.3.

25% Intermission

  • Nullaeus summons one Enslaved Voidcaster, which has two abilities: A Shadow Bolt that can be interrupted (or ignored as it doesn't deal much damage and you don't want to risk not having your interrupt up for Emptiness of the Void Icon Emptiness of the Void), and a Shadow Crash Icon Shadow Crash that deals heavy Shadow damage to the target area - Just sidestep away from it.
  • Nullaeus himself gains access to Umbral Rage Icon Umbral Rage, a 10% damage increase that stacks. This is a soft enrage and this is where you must save any cooldowns left to kill Nullaeus before he becomes too overwhelming.
5.4.

Tier ?? Changes

The fight is the exact same on Tier ?? difficulty, besides Nullaeus and his adds dealing significantly more damage and having more health. With the higher health pools, you will likely have to deal with both Nullaeus and his adds together, so prepare for that accordingly.

6.

Achievements and Rewards

Defeating Nullaeus in Midnight Season 1 provides players with the following achievements and rewards:

  • My Shady Nemesis Icon My Shady Nemesis: Defeat Nullaeus in his lair before the release of the next season of delves. Rewards the Nullaeus Domaneye Icon Nullaeus Domaneye cosmetic helm.
  • Completing the Seasonal quest Nulling Nullaeus gives you the Dominating Victory Icon Dominating Victory toy.
  • Let Me Solo Him: Nullaeus Icon Let Me Solo Him: Nullaeus: Defeat Nullaeus in his lair on Tier ?? difficulty without any other players in your party before the release of the next season of delves. Rewards the Arcanovoid Construct Icon Arcanovoid Construct mount.
  • Lighting the Dark Icon Lighting the Dark: Defeat Nullaeus in his lair on Tier ?? before the release of the next season of delves. Rewards the Ominous title.
  • Fabled Let Me Solo Him: Nullaeus Icon Fabled Let Me Solo Him: Nullaeus: Be one of the first 4000 players in your region to defeat Nullaeus in his lair on Tier ?? without any other players in your party, before the release of the next season of delves. Rewards the Fabled Vanquisher of Nullaeus title.

For those looking to obtain the Arcanovoid Construct Icon Arcanovoid Construct mount, here is what it looks like in the game:

7.

Learn More About Delves!

Delves are bite-sized, role-agnostic replayable world instances that allow you to engage in quick yet rewarding adventures. For more details, check out our general guide!

8.

Changelog

  • 19 Mar. 2026: Added quick notes for Tier ?? and Imploding Strike tank-only mechanic.
  • 17 Mar. 2026: Added strategy for the Tier ? fight.
  • 02 Feb. 2026: Guide added.
Show more
Show less