decaying winter oblivion boss: Step-by-Step Guide

The decaying winter oblivion boss encounter is the final stage of the alternate Oblivion ending in Decaying Winter. Players first complete a chain of hidden objectives, survive Night 10, and extract into a separate area controlled by Reikgon. After five special waves, the team returns to the helipad for a final battle against the corrupted form of Zealot Void.

The route is difficult because it combines preparation, timed objectives, limited inventory space, multiple elite enemies, and a short final-boss timer. The safest strategy is to treat the ending as one connected operation rather than several unrelated fights.

Video Highlights:

• Zealot Void appears as the final enemy after the Nightmare sequence.
• The boss uses two Deo Volentes and aggressive melee attacks.
• The encounter includes lethal spin and dash attacks.
• Parrying creates the main opportunity for teammates to deal damage.
• The fight becomes faster as the boss loses armor.

The Oblivion ending begins with information delivered by a broken drone in the mountain area. The objectives are spread across the normal map, so teams should divide responsibilities only when every player understands the route. Communication is especially important for the Shadows, because two of their locations require firearms.

The team must complete these objectives before finishing Night 10. After the conditions are met, the Oblivion extraction sequence becomes available. Keep the final objective in mind when spending ammunition: the route still includes multiple waves and a boss fight.

Once the route is complete and Agents finish Night 10, the team receives a short inventory-loading window before extraction. Only items placed in the player’s inventory carry forward. Rations stored inside an Agent container do not provide their contents after entering the new area, so prioritize equipment that directly improves survival.

The infection meter resets to zero after entering Oblivion, and the team receives a depleted black morale meter. This means infection medicine is less urgent than armor, healing, and emergency movement tools.

After the cutscene, Reikgon announces the special wave in the Oblivion area. Enemies enter from the sides and converge on the team. Five waves must be cleared, with a boss appearing at the end of each wave.

The special High Priest variants require different responses. Battlejuice uses two Tec-9 guns and relies on dodges, rolls, slides, and unusual mobility. Lebrock is a durable melee threat with a dangerous spinning attack. Celldweller has lower listed health than Lebrock but attacks at range with daggers and summons groups of Lost Souls.

All High Priests can use Shadowfade. When a dark aura surrounds one of them, shove the enemy to interrupt the ability. If the effect is not canceled, the High Priest can recover to full health.

After Wave 5 is cleared, the team receives a brief break before the final boss appears. Reikgon opens a red portal and reveals Zealot Void’s chained, undead body. The boss wields two Deo Volentes and begins pursuing the Agents once the encounter starts.

The boss is listed at 15,001 HP. The game applies a small amount of initial damage to establish aggression, so the player who triggers the encounter should be ready to retreat toward the team. Zealot Void cannot be shoved, making positioning and parry timing more important than crowd-control tactics.

The boss’s armor deteriorates during the fight. As the armor weakens, Zealot Void becomes faster, reducing the value of simply running away. A dedicated player should focus on parrying while other teammates attack from safer angles. This division of roles is more dependable than having every player attack at once.

The encounter has a three-minute limit. If the team fails to defeat the boss in that period, the players succumb to the Oblivion ending. Deaths also create a serious problem because the remaining group must continue handling the boss while preserving enough damage output to finish within the timer.

A practical team arrangement is:

• Parry anchor: Stay close enough to control the boss’s attention and create attack windows.
• Ranged damage players: Fire during recovery windows and avoid standing directly behind the parry anchor.
• Support player: Track healing, tourniquets, ammunition, and speed stims.
• Fallback player: Recover teammates only when Zealot Void is safely occupied and the timer allows it.

The team should not attempt to outrun the boss indefinitely. Use speed stims to escape dangerous patterns, reposition, or recover from a failed parry. Once Zealot Void accelerates, disciplined defensive play becomes more valuable than constant movement.

The final battle is easier when the team arrives with a clear role assignment and a compact inventory. The extraction window is short, so decide what each player needs before Night 10 ends. Carrying every available item is less useful than bringing equipment that directly supports the Nightmare waves and final boss.

Use the following sequence once the final wave ends:

1. Use the break efficiently. Organize positions, confirm ammunition, and identify the player responsible for the first parry.
2. Avoid wasting healing early. The boss’s lethal attacks are better handled by movement and timing than by absorbing damage.
3. Force controlled attack windows. Let the parry anchor draw attention while teammates attack from safer angles.
4. Respect the armor phase. As Zealot Void becomes faster, shorten attack commitments and prepare for immediate disengagement.
5. Watch the clock. The three-minute limit means the team must balance revives, healing, and damage instead of resetting endlessly.
6. Finish the boss before the timer expires. Defeating the final boss completes the Oblivion ending.

For reference, the Oblivion page on the Decaying Winter Wiki contains the route, wave layout, boss details, and related trivia. Use it alongside the in-game situation because enemy pressure and team composition can change how safely each step is performed.