- Decaying Winter bosses appear in regular encounters, special events, or Last Strandeds Holdout waves.
- Yosef is a ranged priority target with armor, grenades, and an M60-E6.
- Sledge Queen relies on parries, grapples, explosive Knuckleboom attacks, and rapid counterattacks.
- Sickler cannot be stunned or slowed, making avoidance safer than an unprepared fight.
- Holdout bosses require role assignments, target control, and protection for allies or evacuation objectives.
Decaying Winter Bosses: Spawn Rules and Threat Levels
Decaying Winter bosses are the game’s most dangerous hostile encounters. In the regular mode, boss threats are associated with late-wave combat, while Last Strandeds introduces recurring boss waves every 10 waves. Each boss can lead or accompany a larger enemy force, so the real challenge is usually controlling the battlefield rather than dealing damage to one target.
The main boss roster includes Yosef, Sledge Queen, Sickler, and the rare Bucketman. Last Strandeds adds specialized threats such as Businessman, Rhyer, The Commander, and Zealot Void. Some enemies are easier to damage from range, while others punish parries, close-range attacks, or careless positioning.
The Decaying Winter Wiki Bosses page is the best reference for boss-specific mechanics and ongoing stat updates.
Ranged Pressure
Yosef and Businessman can apply heavy firearm pressure. Use cover, spread out, and remove them before their supporting enemies overwhelm the team.
Melee Punishment
Sledge Queen, Bucketman, and Rhyer close distance quickly and recover from stuns or parries faster than ordinary enemies.
Objective Threats
The Commander and Zealot Void are especially dangerous during Holdout objectives because they can threaten allies, pilots, or evacuation progress.
| Boss Group | Where They Appear | Main Concern | Recommended Priority |
|---|---|---|---|
| Main game bosses | Regular game encounters | High damage and enemy support | Very high |
| Sickler | Rare main encounter and Reikgon boss waves | Stun immunity and execution healing | Avoid or isolate |
| Holdout bosses | Last Strandeds waves | Objective pressure and reinforcements | High |
| Rare bosses | Scav War or special encounters | Fast attacks and unusual defenses | Situational |
Treat the boss and its surrounding horde as one encounter. Clear nearby threats when possible, but do not lose track of the boss’s position or attack pattern.
Main Game Boss Rankings and Stats
The main-game bosses have different roles, so a simple health ranking does not tell the whole story. Sledge Queen has the highest listed health among the primary named bosses, but her movement, parries, grapples, and Knuckleboom attacks create the greatest close-range pressure. Yosef is less mobile but can damage a team from a distance while resisting firearms.
Sickler is a special case. Its listed health is lower than Sledge Queen’s, but its inability to be stunned or slowed makes conventional crowd-control tactics unreliable. Bucketman has the highest listed health in this group and combines fast melee swings with a bullet-blocking helmet.
| Boss | Health | Notable Damage | Defensive Traits |
|---|---|---|---|
| Yosef | 1,000 HP | 7 damage per M60-E6 shot; grenades deal about 50 damage | 25% firearm resistance; armor |
| Sledge Queen | 1,200 HP | 15 light, 45 perfect hit, 60 heavy damage; 40 Arbiter shot damage | 25% firearm resistance; parries and dodges |
| Sickler | 700 HP | 15 light damage; executions restore 50% maximum HP | Immune to stuns and slows |
| Bucketman | 1,500 HP | 15 light, 45 perfect hit, 60 heavy damage | 25% firearm resistance; helmet blocks bullets |
Yosef
Yosef leads the scavengers and uses the M60-E6, making him a major ranged threat. He moves quickly when closing distance and slows while firing. His armor provides 25% damage reduction from all sources, and his grenades can deal substantial damage while applying Cripple.
A boss warning and health bar help identify him during the encounter. Eliminate Yosef early when the team has a safe firing angle, because leaving him active allows his firearm pressure and grenades to compound the surrounding horde.
Key points:
- Maintain cover whenever he is firing.
- Avoid stacking together because grenades can punish grouped Agents.
- Prioritize consistent damage over risky melee attempts.
- Watch for Bleed, Fracture, or Cripple applications.
- The listed defeat rewards are 5,000 EXP and 2,000 Odens.
Sledge Queen
Sledge Queen leads the Castle Raiders and is one of the most mechanically demanding bosses. Her Knuckleboom can launch her into the air, create explosive attacks, or produce a long-range shot with high accuracy. She may use the ability repeatedly in a short period, and the attacks can ignore resistances.
Her other tools include grapples, bullet parries, melee parries, Absolver Perfect Hits, dodges, and grenades. Her arms have bulletproof plating, so shooting her while she is protecting her head is inefficient. Shoving can interrupt some Knuckleboom attempts, but mistiming the shove may trigger a counterattack.
| Sledge Queen Mechanic | What It Does | Practical Response |
|---|---|---|
| Knuckleboom Disengage | Jumps high and descends toward an Agent | Keep moving and prepare for the follow-up shot |
| Explosive Knuckleboom | Deals heavy blast damage at close or long range | Interrupt with a well-timed shove when possible |
| Parry stance | Protects her head and counters attacks | Aim at legs or force her out of the stance |
| Execution healing | Restores half maximum HP and grants a speed boost | Prevent easy kills on nearby Agents or NPCs |
| Raider alert | Damage or shoves alert nearby Raiders | Prepare the team before engaging |
Sledge Queen drops a valuable unique Agent Container. After her defeat, Raiders no longer appear in the Castle on the following night and are replaced by Scavengers. This reward can be valuable, but triggering her without preparation can turn an otherwise manageable run into a retreat situation.
Sickler and Bucketman
Sicklers appear as chained shadows with red eyes and a pitched-down crying sound. When disturbed, they can become aggressive and attack nearby targets. They can also execute enemies or Agents and restore 50% of their maximum health. Because they cannot be stunned or slowed, kiting is often safer than trying to lock them down.
Bucketman is a rare Scav War boss with a 5% chance to appear as the only enemy. He moves quickly, dodges, parries, grapples, and attacks with extremely short delays. His bucket helmet blocks all bullet types, so a Frontliner should lead him away from teammates while the rest of the squad finds a safer way to damage him.
Do not trigger Sledge Queen or Sickler casually. If either boss is activated before the team has suitable gear and space, retreating can be more effective than forcing a fight.
Step-by-Step Boss Fight Setup
A reliable boss fight begins before the boss is activated. The team needs space, an escape route, and a clear plan for which Agent will hold attention. The following process works across most regular and Holdout boss encounters.
Prepare the Arena
Clear nearby enemies when the situation allows, identify cover, and locate a route that prevents the boss from cornering the team. Avoid starting the encounter beside an objective, turret, or crowded doorway.
Assign Roles
Choose one Agent to stall or kite the boss, one or more Agents to deal sustained damage, and another player to manage nearby enemies or revive teammates. Against fast melee bosses, the Frontliner should create distance rather than stand still.
Identify the Attack Pattern
Watch the boss for a short period before committing. Look for ranged firing pauses, parry stances, jump attacks, grapples, shield phases, or recovery windows. Do not spend valuable resources during a defensive animation.
Control the Supporting Horde
Keep the boss visible while removing enemies that can interrupt reloads, block movement, or threaten the evacuation objective. Do not allow the squad to split so far that the boss can isolate a single Agent.
Secure the Reward or Retreat
Once the boss is defeated, collect the reward only after checking the area. If the fight becomes unstable, retreat through the planned route instead of repeatedly re-engaging from a bad position.
| Role | Primary Job | Useful Behavior |
|---|---|---|
| Boss controller | Keep the boss away from teammates and objectives | Kite, use cover, and avoid cornering yourself |
| Damage dealer | Apply consistent damage during openings | Focus exposed targets and respect defensive states |
| Horde clearer | Remove nearby enemies and protect movement routes | Avoid pulling additional groups into the boss fight |
| Support player | Handle revives, resources, and emergency assistance | Stay close enough to help without grouping everyone |
Cover Controller
Best against Yosef and Businessman. Break line of sight when they fire, then attack during movement or recovery.
Melee Bait
Best against Sledge Queen, Bucketman, or Rhyer. Keep distance, draw attacks, and create openings for teammates.
Objective Guard
Best during Holdout waves. Stay near the pilot, laptop, or other mission-critical area without attracting the boss into it.
A boss kill is valuable only when the squad remains capable of finishing the wave. Preserve healing, ammunition, and escape space rather than trading several Agents for damage.
Last Strandeds Holdout Bosses
Last Strandeds expands the boss roster with enemies tied to specific Holdout waves. These fights are less about simple elimination and more about protecting mission progress. Businessman uses two M60-E6 weapons disguised as crash-test dummies and can dodge or drop-slide. Rhyer is a fast Lameo-Blade user who can apply several status effects and recover from parries quickly.
The Commander is a slow but extremely dangerous heavy attacker. The listed estimate is approximately 5,000 HP and about 300 heavy-attack damage, with stun immunity. He can destroy AI allies and threaten the Evac Pilot before the team has time to finish him.
Zealot Void leads the Deathsquad and may use a SPAS-12 or Military Machete. At half health, he protects himself with a large red shield and exits the phase after his squad is defeated or after several seconds.
| Holdout Boss | Wave or Association | Estimated Health | Main Counterplay |
|---|---|---|---|
| Businessman | Bad Business Wave | About 1,000 | Use cover and punish movement pauses |
| Rhyer | Civil War/ERU Wave | 700 | Keep distance and expect rapid recovery |
| The Commander | Emperor-associated Boss Wave | About 5,000 | Stall, debuff with Tier 4 Fracture, protect the pilot |
| Zealot Void | Deathsquad encounter | About 1,200 | Maintain distance, clear the squad, wait out shield phase |
Holdout Priority Rules
Use these priorities when multiple enemies are active:
- Protect the Evac Pilot first if The Commander can reach the objective.
- Separate Rhyer and other fast melee threats from slower enemies so they cannot surround the team.
- Clear Deathsquad support units before committing resources to Zealot Void’s shield phase.
- Use debuffs strategically, especially against The Commander, whose heavy damage can be reduced through Tier 4 Fracture.
- Avoid unnecessary parries against enemies with rapid recovery or stun immunity.
Some Holdout boss stats are listed as estimates or unknown values. Treat those figures as practical reference points rather than guaranteed damage testing results.
The most dangerous target is not always the boss with the highest health. During an objective wave, the enemy closest to the pilot, laptop, or evacuation route may deserve immediate attention.
Boss Preparation Checklist and FAQ
Use this checklist before starting a planned boss fight. It is especially useful when the encounter can be avoided or when a teammate has already activated a high-risk target.
Boss Fight Readiness:
- Identify the boss and confirm its main attack pattern
- Clear or avoid nearby enemies before committing
- Choose a controller, damage dealer, and support role
- Keep an escape route open throughout the fight
- Protect objectives and retreat if the team loses control
| Preparation Check | Why It Matters | Failure Risk |
|---|---|---|
| Cover available | Reduces ranged pressure from Yosef or Businessman | Repeated damage while repositioning |
| Escape route open | Prevents cornering by melee bosses | Team wipe during a retreat |
| Status recovery ready | Helps against Bleed, Cripple, and Fracture | Reduced mobility or survivability |
| Objective protected | Essential in Holdout encounters | Pilot or mission progress can be lost |
| Boss identified | Reveals the correct counterplay | Wasted attacks and poor positioning |
Frequently Asked Questions
Q: When do Decaying Winter bosses appear?
Regular-mode bosses are associated with late-wave encounters, while Last Strandeds introduces boss waves every 10 waves. Exact encounters depend on the mode and boss.
Q: Which Decaying Winter boss is hardest to fight?
Sledge Queen and Sickler are among the most demanding because Sledge Queen combines explosive attacks, parries, grapples, and dodges, while Sickler cannot be stunned or slowed.
Q: Can Sledge Queen be parried or shoved?
She can be shoved and parried, but she recovers quickly. A successful parry creates a short attack window, while a mistimed shove can trigger a counterattack.
Q: Should I fight the Sickler for its rewards?
Only when the team has suitable equipment, space, and a reliable way to kite it. Sickler executions restore half of its maximum health, so an unprepared fight can become inefficient.
Learn the boss’s recovery windows before chasing damage. Controlled movement, clear roles, and a planned retreat usually produce better runs than aggressive attacks.