Mysterious Laboratory

Your complete guide to mastering Brookhaven RP's most challenging and rewarding end-game location. Discover secrets, strategies, and step-by-step walkthroughs to conquer the laboratory.

Laboratory Difficulty: Advanced • Recommended Level: 60+

Laboratory Overview

The Mysterious Laboratory is a late-game dungeon in Brookhaven RP with greater randomness compared to other locations like the Bunker. With variable enemy buffs and player enhancements, it presents a significant challenge that requires proper preparation and strategy.

Key Features

  • Randomized Elements: Enemy buffs and player enhancements change each run
  • Bio-Fill Tank System: Upgradeable resource management mechanic
  • Chip Slots: Customize your laboratory experience with buffs and threat blocks
  • Reputation System: Earn reputation to unlock powerful rewards
  • Permanent NPC: Trader available after first completion

Preparation Checklist

  • Two iron axes (for clearing thorny barriers)
  • Sufficient healing items and weapons
  • Energy batteries and catalysts for seaweed production
  • Base level 60+ recommended
  • Complete Survivor's Path questline first

Laboratory Structure

  • First Floor: Entrance, seaweed farm, bio-fill tank
  • Second Floor: Buff selection area, scanning mechanism
  • Basement Levels: B1 and B2 combat areas with bosses
  • Watchtower: Daily seaweed source (respawns at 8 AM)

How to Enter the Laboratory

Unlocking Access

To enter the laboratory for the first time, you must progress through the Survivor's Path until you unlock a task led by Eva. This mission requires you to infiltrate the laboratory and clear zombies from the main floor, which permanently unlocks access to the location.

Important Note

Unlike some other games with laboratory access tasks that require specific items like "20 Jellopy Crystals", Brookhaven's laboratory access is tied to the Survivor's Path questline progression.

Initial Preparation

  • Required Items: 2 iron axes for breaking through thorny barriers
  • Quest Prerequisite: Complete Eva's laboratory infiltration task
  • Recommended Level: Base level 60+ (similar to other game laboratory requirements)
  • Team Consideration: Can be attempted solo but easier with a team

Laboratory Game Mechanics

Bio-Fill Tank System

Located next to the elevator on the first floor, the Bio-Fill Tank starts at level 1 and can be upgraded to level 3 (max in current version). Each upgrade unlocks an additional chip slot and an extra energy slot. Energy slots are consumed when selecting buffs on the second floor. Seaweed is the primary filling material.

Seaweed Farming

  • Location: First floor, far right side
  • Production: Energy battery + catalyst = 2 seaweed
  • Usage: 8 seaweed fills one bio-fill tank slot
  • Alternative Source: Watchtower (16 seaweed daily, respawns at 8 AM)

Chip Slot System

  • Location: Next to bio-fill tank on first floor
  • Slots: 1 initially, up to 3 with tank upgrades
  • Function: Add buffs or block threats
  • Strategy: Threat blocking provides more consistent benefits
  • Locking: Chips lock after scanning on second floor

Chip Types & Effects

S

Threat Blockers

100% prevention of specific threats for the entire laboratory run. Recommended for consistent results.

B

Buff Enhancers

Increase probability of specific buffs appearing in selection. Most are randomly obtained.

CS

Clean Sweep

One of the few non-random chips. Provides specific benefits for room clearing.

GK

Giant Killer

Another non-random chip. Specialized for dealing with larger enemies and bosses.

Reputation & Rewards System

The laboratory uses a reputation system similar to the bunker, with three types of reputation items that primarily drop in hard mode.

Reputation Items

  • Disk: 30 reputation points
  • CD: 10 reputation points
  • Work Badge: 5 reputation points
  • Normal Mode Source: Only B2 boss drops one work badge
  • Extra Drops: Pest chip generates 2 extra zombies in B1/B2 dropping CDs

Reputation Rewards

  • Higher reputation increases chance of armor-piercing guns in A/B cards
  • Hard A/B cards cannot give all armor-piercing guns
  • Hard B card always contains one grenade launcher
  • Ultimatum and Resonance guns unlock after reaching certain reputation with Ida

Trader Priorities

After first normal B2 completion, a permanent trader NPC appears. Trading priorities:

  1. Armor-piercing guns
  2. Reputation cards
  3. A/B cards or Hard A/B cards
  4. Revival items
  5. Catalysts
  6. Energy batteries
  7. Sewer reputation
  8. Seaweed

Laboratory Walkthrough

1

Initial Preparation

Bring 2 iron axes to clear thorny barriers on first entry. Ensure you have adequate weapons, healing items, and energy batteries for seaweed production.

2

First Floor Setup

Repair the seaweed farm on the right side. Gather seaweed from watchtower (16 daily at 8 AM) or produce using energy batteries + catalysts. Fill bio-fill tank with seaweed (8 per slot).

3

Chip Configuration

Insert chips into available slots. Recommended to prioritize threat-blocking chips for more consistent runs. Remember chips lock after scanning on second floor.

4

Second Floor Buff Selection

Proceed to second floor for buff selection. Each choice consumes one energy slot from bio-fill tank. Choose buffs that complement your playstyle and equipment.

5

Combat Areas (B1 & B2)

Clear B1 and B2 areas of enemies. Defeat B2 boss to obtain work badge (normal mode). In hard mode, collect additional reputation items for better rewards.

6

Trader Unlock & Strategy

After first normal B2 completion, the trader NPC becomes permanently available. Trade materials according to your current needs and priorities.