Scavland Sector B-4 Bunker Guide

Quick answerConcealed beneath the industrial rail yards northwest of Zalesye, the Sector B-4 Bunker Complex is the most perilous and lucrative subterranean Soviet facility in Scavland's Early Access build. Guarded by a reinforced hydraulic blast bulkhead, entry requires swiping an authentic Red Keycard. Inside, the facility is divided into two distinct levels: an upper administrative sector containing armory footlockers and electrical breaker panels, and a flooded sub-level infested with lethal Tongue Monsters (Lickers) and radioactive pipe breaches. Successfully raiding Sector B-4 yields S-Tier military firearms, high-magnification optics, and rare Flux Aspect Cores.

Sector B-4 subterranean military bunker entrance and concrete blast doors in Scavland

Media: user-provided authorized asset pack · Official Steam announcements & community reports · Update 0.7.0. This image supports context, not every mechanic described on the page.

Field notes

Official Video Reference: Scavland How do you enter all the currently identified bunkers and secret bunkers?.. · Game Detox Dopamine

01 · Acquire a Red Keycard: Before marching to the facility, secure a Red Keycard from locked hospital director safes or barter with Tier 3 black-market merchants.
02 · Breach the Outer Blast Door: Swipe your Red Keycard at the electronic reader beside the heavy blast doors. Keep your firearm raised, as sirens alert nearby surface patrols.
03 · Clear Upper Administrative Corridors: Systematically sweep office rooms using suppressed firearms. Loot metal desks for weapon attachments, 5.45x39mm military ammo boxes, and security schematics.
04 · Restore Emergency Reactor Power: Locate the central electrical generator room. Replace damaged fuses and throw the primary breaker to restore overhead lighting and drain flooded lower corridors.
05 · Infiltrate Lower Sub-Level Bio-Vaults: Don a gas mask with at least 80% filter charge to survive heavy yellow radiation zones. Use a 12-gauge shotgun to eliminate lurking Tongue Monsters.
06 · Loot High-Tier Military Weapon Crates: The deepest vault contains locked green footlockers housing pristine rifles (such as the 63 Dragoon or MK-47). Crates reset every 3 in-game hours.

Evidence boundary

Complex Landmark	Sector B-4 Subterranean Soviet Defense Shelter
Key Access Requirement	Red Keycard swipe at reinforced electronic blast door
Sub-Level Hazard	Heavy localized radiation requiring 80%+ gas mask filter charge
Apex Inhabitant	Tongue Monsters (Lickers) lurking in flooded reactor passages
Loot Container Reset	Military armory crates refresh on a 180-minute (3-hour) cycle
Story Climax Point	Primary objective location for the 'Catching Current' questline
Verified Baseline	Official Steam announcements & community reports · Update 0.7.0

Questions players ask

Where is the entrance to Sector B-4 located?

Northwest of central Zalesye, nestled against the railway retaining wall behind rusted industrial shipping containers.

Does the Red Keycard break after one use?

No, keycards possess multi-use electronic durability, but keep a spare stored in your central safehouse stash.

What should I do if the lights go out inside Sector B-4?

Turn on your weapon flashlight or night vision immediately. The facility has dark corridors where mutants ambush in pitch blackness.

Can I find the Flux Aspect Core in Sector B-4?

Yes, the Flux Aspect Core is located in the deepest reactor core room and requires an Anomaly Scanner to safely extract.

Can enemies or mutants enter closed rooms inside the Sector B-4 bunker?

In Early Access, community reports note an occasional pathfinding quirk where alerted enemies can push through or open closed interior doors without full door-opening animations. When exploring subterranean bunkers, never rely on a closed interior door as permanent cover—keep your weapon raised, hold corner angles, and keep a high-stagger shotgun ready.

How long does it take for Sector B-4 loot to respawn?

All high-tier military footlockers and ammo crates reset every 3 in-game hours (180 minutes).