Media: user-provided authorized asset pack · Endgame Raid Logs & Update 0.7.2 Content Verification. This image supports context, not every mechanic described on the page.
Field notes
- 01 · Secure Red Keycards for Vault Infiltration: Red Keycards spawn inside locked hospital safes or can be purchased for high reputation from black-market brokers. Store duplicate keycards in your permanent safehouse stash to safeguard access.
- 02 · Infiltrate Sector B-4 Subterranean Facility: Locate the concrete blast doors northwest of Zalesye past the railway embankment. Equip night vision or high-lumen weapon lights, swipe your Red Keycard, and breach the blast bulkhead.
- 03 · Defeat High-Threat Tongue Monsters (Lickers): Subterranean corridors are stalked by mutated Lickers that grapple from shadows. Pre-aim corners with a 12-gauge shotgun loaded with heavy magnum buckshot to stagger beasts before they tether your operative.
- 04 · Secure the Flux Aspect Core: Navigate to the subterranean electrical reactor chamber. Activate the Anomaly Scanner to pinpoint the floating Flux Aspect Core. Contain the artifact within an insulated container to avoid lethal bio-contamination.
- 05 · Craft and Maintain Expert Weapon Repair Kits: Purchase the Advanced Repair Kit schematic from Volodymyr at Trader Rank 2. Crafting universal repair kits from pliers, gun lube, and toolkits lets you restore high-tier weapons at any condition.
- 06 · Establish Stash Forward Outposts at Arcadia: Use the four newly equipped regional outposts (Arcadia, Mechanist Base, Mudlark Camp, Microrayion) introduced in Update 0.7.0 to stage ammo and extract heavy military salvage without trekking back to Zalesye.
Evidence boundary
| Primary Endgame Raid | Sector B-4 Subterranean Military Bunker (Soviet Vault) |
| Access Requirement | Red Keycard swipe at reinforced concrete blast door |
| Apex Boss Threats | Tongue Monsters (Lickers), Armored Bandits, and Big Bears |
| Endgame Story Objective | Flux Aspect Core extraction during 'Catching Current' questline |
| Universal Maintenance | Expert Repair Kits usable regardless of equipment wear level (Update 0.7.0) |
| Loot Reset Period | Endgame bunker crates reset on a 3-hour (180-minute) internal timer |
| Verified Baseline | Endgame Raid Logs & Update 0.7.2 Content Verification |
Questions players ask
What gear do I need before entering the Sector B-4 bunker?
Bring an assault rifle (MK-47 or Mikhail 74U) with at least 120 rounds of armor-piercing ammo, a secondary shotgun for mutants, 2 tourniquets, a wooden splint, a gas mask with 80%+ filter, and your Red Keycard.
How do I defeat Tongue Monsters without taking heavy damage?
Listen for their wet clicking sounds. Back up into narrow doorways where they cannot flank, and fire high-stagger shotgun blasts directly into their open mouth when they prepare to grapple.
Where can I find the schematic for Expert Weapon Repair Kits?
Gunsmith Volodymyr at the Crossroads annex offers the Advanced Weapon Repair Kit blueprint once you achieve Trader Rank 2.
Do underground bunker doors re-lock after exiting?
Yes. If you exit the facility and the 3-hour loot reset occurs, you will need a Red Keycard to unlock the outer blast door again.
What is the reward for completing the Flux Aspect Core storyline?
Securing the core unlocks high-tier anomaly detection gear, grants +500 faction reputation across allied syndicates, and awards liquid ruble bounties.
Related guides
Red Keycard & Bunkers
Complete Scavland bunker guide: subterranean bunker entrance locations in northwestern Zalesye, Red Keycard vault access, military loot respawn cycles, and emergency extract routes.
Read field notes
Weapons & attachments
Complete Scavland weapons and attachments guide: 25+ firearms, 300+ attachment components, Update 0.7.0 durability pass, jam clearance, and weapon bench modding.
Read field notes
Anomaly Scanner
Complete guide to the Core Detector anomaly scanner in Catching Current: locating the Flux Aspect Core, audio pitch tracking, missing item bug fix, and quicksave reset.
Read field notes
Map & Locations
Complete Scavland full map & locations guide: 3x expanded Zalesye world, Arcadia, Mechanist Base, Mudlark Camp, Microrayion stashes, Bunker B-4 landmarks, and safe routes.
Read field notes