Zealot Void Boss Fight: Oblivion Ending Walkthrough - Enemies

Zealot Void Boss Fight: Oblivion Ending Walkthrough

Learn how to unlock the Oblivion ending, survive 5 Nightmare waves, and defeat the Zealot Void boss in Decaying Winter.

2026-08-08
Decaying Winter Wiki Team
Quick Guide
  • Zealot Void is the final boss of the Oblivion ending, wielding dual Deo Volente executioner swords with 15,001 HP.
  • Oblivion trigger: Break all lamps, grab the Orange Knife, eliminate 3 shadows, and talk to Zym in the lab.
  • Nightmare waves: Players must survive 5 escalating waves featuring cultists, shadows, and unique High Priest bosses.
  • Time limit: You have exactly 3 minutes to defeat Zealot Void before succumbing to Oblivion.
  • Parrying is mandatory: The boss cannot be shoved and his spin and dash attacks are lethal and unsuvivable.

Unlocking the Oblivion Ending

The Oblivion ending is a hidden alternate ending introduced during the third part of the Cultist Takeover event in Decaying Winter. It requires players to follow a precise sequence of steps communicated through morse code by a broken drone located in the mountain area. Missing any step will prevent the Oblivion ending from triggering.

Video Highlights:

  • Zealot Void spawns as the ultimate final boss after Nightmare waves
  • Players used explosives to deal massive damage during the time limit
  • Boss armor visually deteriorates as HP drops, increasing his speed
  • Spin and dash attacks proved lethal regardless of armor tier
  • Team coordination and ammo management were critical to survival
Prerequisites

You must complete all Oblivion steps BEFORE finishing Night 10. Once Night 10 is cleared, the game checks whether the steps were completed. If done correctly, a 30-second extraction countdown begins instead of a normal evacuation.

Oblivion Step-by-Step Activation

1

Break All Lamp Posts

Locate and destroy every lamp post scattered around the map. This is the first trigger condition and must be completed before moving forward.

2

Obtain the Orange Knife

Find the Orange Knife hidden within the castle walls. It is strongly recommended to kill Sledge Queen (SQ) first to make retrieving the knife significantly easier without interference.

3

Eliminate the 3 Shadows

Kill three specific shadows placed around the map: one in the Gallery, one on top of the map near the castle, and one by the Mines. The shadows in the Mines and Castle require guns to eliminate.

4

Open the Lab

Grab the knife and keycard, then open the lab. Head to the High Priest room. The lab will be empty of enemies, so take time to freely loot valuable equipment.

5

Talk to Zym

Initiate dialogue with Zym multiple times to progress his conversation. After completing his dialogue, you will receive 5 additional minutes on the timer to loot and prepare.

Extraction Inventory

Only items in your inventory persist into Oblivion. Bring vital gear like I4S-DS, Tactical Armor, Medkits, and Tourniquets. Rations cannot be brought even inside an Agent Container. Your infection meter resets to 0 upon entry.

Nightmare Wave Breakdown

After extraction, players are teleported to a new dimension called Oblivion. Reikgon announces the start of a special Nightmare wave consisting of 5 escalating waves, each with unique enemies and a boss encounter.

WaveMinor ThreatsMajor ThreatsBoss
Wave 1Knife, Kukri, Sabre CultistsAkimbo Cultists, SkinnersSickler (Enraged)
Wave 2All previous Cultists and ShadowsWrench Cultists, more Akimbo/SkinnersHigh Priest (Akimbo Scythe)
Wave 3All previous enemiesSPAS Cultists, HangersBattlejuice High Priest (Tec-9)
Wave 4All previous, more Wrench typesGunner Cultists, more Hangers/SPASLebrock High Priest (Scythe Tank)
Wave 5Any Cultist and Shadow typeSkinners spawn more frequentlyCelldweller (Summons Lost Souls)
Shadowfade Mechanic

All High Priests can use Shadowfade to heal to full HP. When you see a dark shadowy aura envelope them, immediately shove them to cancel the ability. Failing to do so resets their health completely.

Special High Priest Variants

Battlejuice

  • Weapon: Dual Tec-9 guns
  • HP: 1,100
  • Mobility: Dodges, rolls, slides
  • Lowest HP of all High Priests
  • Can Shadowfade

Lebrock

  • Weapon: Hollow's Scythe
  • HP: 1,200
  • Tankiest High Priest
  • Dangerous spin attack with speed buff
  • No ranged ability

Celldweller

  • Weapon: Dagger barrage
  • HP: 700
  • Summons Lost Souls (1 HP, 50 WalkSpeed)
  • Throws daggers at range
  • Second weakest by HP

Zealot Void Final Boss Strategy

Once all 5 Nightmare waves are cleared, players are teleported back to the normal map at the helipad to face the ultimate challenge: Corrupted Zealot Void. Reikgon opens a red portal revealing the undead corpse of Zealot Void, chained and controlled by Reikgon himself. Void is armed with two Deo Volente-skinned executioner swords.

Attack TypeBase DamageWith Zealot TechniqueSurvivable?
Light Attack2512.5Yes
Heavy Attack100-15050-75Yes (barely)
Spin AttackLETHALLETHALNo
Dash AttackLETHALLETHALNo
Lethal Attacks

Spin and Dash attacks CANNOT be survived regardless of your armor or perks. Speed stims are absolutely mandatory for dodging. You must constantly reposition and never stay in his melee range without a parry plan.

Core Boss Stats

StatValue
Total HP15,001
WalkSpeedIncreases as armor breaks
WeaponsDual Deo Volentes
Time Limit3 minutes
ShovableNo
Phases3 (armor deteriorates each phase)

Recommended Strategy

The most reliable strategy involves assigning one player as the dedicated parrier while the rest of the team focuses on dealing ranged damage. Since Zealot Void cannot be shoved and his lethal attacks cannot be tanked, parrying is the only defensive option that creates an opening for the team to shoot safely.

Armor Deterioration

Zealot Void's armor visually breaks apart as he takes damage. Each phase makes him faster and more aggressive. The lower his HP, the harder it becomes to parry and dodge. Prioritize burst damage in the early phases when he is slowest.

Victory Conditions

After defeating Zealot Void, the Oblivion ending is completed. The end screen confirms this is likely one of the final updates for Legacy Decaying Winter, making this a milestone achievement for dedicated players.

Preparation Checklist

Oblivion Run Preparation:

  • Break all lamp posts around the map
  • Kill Sledge Queen to safely retrieve the Orange Knife
  • Eliminate all 3 shadows (Gallery, Castle roof, Mines)
  • Open the lab and loot the High Priest room
  • Complete all dialogue with Zym
  • Stock I4S-DS, Tactical Armor, Medkits, and Tourniquets
  • Bring speed stims for the Zealot Void fight
  • Coordinate parry roles before extraction

Hangman: The Harder Alternative

If you fail the Oblivion steps after grabbing the Orange Knife but still complete Night 10, the Hangman ending activates instead. This is considered even harder than the Nightmare Oblivion waves, with only two recorded legitimate completions to date.

FeatureOblivion EndingHangman Ending
DifficultyExtremeBeyond Extreme
TriggerComplete all steps + N10Grab Orange Knife, skip steps, N10
EnemiesCultists, Shadows, High PriestsEvery enemy and boss in the game
Recorded ClearsMultipleOnly 2 known
Special Rule5 waves + Zealot VoidAll allies turn hostile
Hangman Chaos

Hangman activates similarly to normal evacuation but with every enemy and ally against you simultaneously. It features Holdout wave enemies and nearly every boss in the game. Some enemies have Hangman-exclusive variants with nerfed stats to make survival theoretically possible.

Trivia and Collaboration Details

The Oblivion ending marks several firsts for Decaying Winter. It is the first time original voicelines have been used for a character (Reikgon), as the AGENT Device uses ISAC's voicelines from The Division and Ilija reuses PayDay 2 audio. This ending is also a collaboration with Battlejuice and Lebrock, featuring their music throughout the event.

Reikgon's Suicide Attempts

During the break between the final wave and the boss spawn, Reikgon attempts to make players suicide three times. These attempts bypass Apostle and Damned perks. The first two behave like Hanger "life advice" events (mash E), while the third destroys the player's AGENT device and says "Embrace the Oblivion."

Music Featured in Oblivion

ArtistSongContext
Battlejuice/LebrockTame the BeastPlays throughout the ending
BattlejuiceThe AscensionPlays during Reikgon Waves
BattlejuiceLow Life On The HighwayBattlejuice Priest radio
House of Serpents & BattlejuiceRitualLebrock Priest radio
CelldwellerGood Luck, You're F***edCelldweller Priest theme

Frequently Asked Questions

Q: How much HP does Zealot Void have in the Oblivion boss fight?

Zealot Void has 15,001 HP. The game internally deals 1 damage to ensure he aggro's onto you. You must defeat him within 3 minutes or your entire team succumbs to Oblivion.

Q: Can Zealot Void be shoved like other enemies?

No. Zealot Void cannot be shoved. The only way to interrupt his attacks is through parrying. One player should be designated as the primary parrier while teammates deal ranged damage.

Q: What happens if I fail the Oblivion steps?

If you grab the Orange Knife but do not complete all required steps before finishing Night 10, the Hangman ending triggers instead. This is an even harder scenario where every enemy and ally in the game turns against you during evacuation.

Q: Can I bring rations into the Oblivion dimension?

No. Rations cannot be brought into Oblivion even if stored inside an Agent Container. The container will not provide resources when equipped. Focus on bringing weapons, armor, medkits, and tourniquets instead.

Q: Are spin and dash attacks from Zealot Void survivable?

No. Both the spin attack and dash attack are coded as LETHAL and cannot be survived regardless of your perk, trait, or armor combination. Speed stims and constant repositioning are mandatory to avoid these attacks.