Sewer Branch Puzzle Complete Guide
The Sewer Branch is a Tier 1 monument featuring green and blue card puzzles with an optional red card room. Despite being underground with high radiation, it offers excellent loot for its tier and is often overlooked by players. This guide covers everything you need to know to successfully navigate Sewer Branch.
Quick Navigation
Requirements & Preparation
Puzzle Requirements
- Green Card Puzzle:
- • 1 Green Keycard
- • 1 Electric Fuse
- • Medium radiation protection
- Blue Card Puzzle:
- • 1 Blue Keycard
- • 1 Electric Fuse (same as green)
- • High radiation protection
- Red Card Room (Optional):
- • 1 Red Keycard
- • No additional fuse needed
- • Very high radiation protection
Recommended Gear
- Radiation Protection: 25-40 rads (Hazmat suit essential)
- Weapons: Any tier (close quarters combat)
- Medical: 5+ bandages, 2+ syringes, rad pills
- Light Source: Flashlight or torch essential
Critical Radiation Warning
Sewer Branch has severe radiation throughout:
- • Entrance: 15-20 rads
- • Main tunnels: 25-30 rads
- • Puzzle rooms: 35-40 rads
- • Without protection, death occurs in 30-45 seconds
- • Hazmat suit is essentially mandatory
Monument Layout
Key Areas
Surface Level
- • Small entrance building
- • Recycler in entrance shack
- • Ladder down to sewers
- • Minimal surface loot
- • Low radiation (5-10 rads)
Underground Sewers
- • Network of tunnels
- • Multiple puzzle rooms
- • High radiation zones
- • Dark environment (bring light)
- • Water sections (no drowning risk)
Monument Features
- • Recycler: Located in surface entrance building
- • Radiation: Extreme underground (25-40 rads)
- • Scientists: None spawn at Sewer Branch
- • Unique: Only monument with all three card tiers in one location
Green Card Puzzle Walkthrough
Step-by-Step Solution
- 1
Enter the Sewers
From the surface building, climb down the ladder into the sewers. Radiation increases immediately - ensure your protection is active.
Tip: Turn on your flashlight before descending - it's very dark below. - 2
Navigate to Fuse Box
Follow the main tunnel. Take the first right, then left. You'll find a room with the fuse box on the wall. Insert your electric fuse.
Warning: Timer starts! You have about 3-4 minutes. - 3
Reach Green Card Door
Backtrack slightly and take the opposite tunnel. The green card reader is just around the corner - very close to the fuse box.
- 4
Loot Green Room
Swipe your green card to enter. Inside you'll find:
- • 3-4 Regular crates
- • 1 Food box
- • Possible blue keycard spawn
- • Medical supplies
Speed Tip: The green puzzle at Sewer Branch is one of the fastest - experienced players can complete it in under 90 seconds.
Blue Card Puzzle Walkthrough
Step-by-Step Solution
- 1
Power Still Active
Good news! The same fuse powers both green and blue puzzles. If you're fast, you can run both with one fuse.
Note: If power ran out, simply insert a new fuse in the same box. - 2
Navigate Deeper
From the green room, continue deeper into the sewers. Follow the main tunnel past several side rooms. The path is fairly linear.
- 3
Find Blue Card Door
The blue card reader is at the end of a long tunnel. You'll pass through water sections - don't worry, you can't drown.
Radiation Alert: This area has 35+ rads. Monitor your health! - 4
Loot Blue Room
Swipe your blue card and enter to find:
- • 1 Military crate
- • 3-4 Regular crates
- • High-tier components
- • Possible red keycard spawn
Efficiency Tip: You can run both green and blue puzzles with a single fuse if you're quick. Total time needed is about 3 minutes.
Red Card Room (Optional)
Bonus Elite Loot
Accessing the Red Room
Sewer Branch has a unique feature - an optional red card room that doesn't require additional fuses or puzzles. It's simply a bonus room for those with a red keycard.
- 1
Location
The red card door is located in a side tunnel between the green and blue puzzle areas. Look for red lighting.
- 2
Requirements
Only a red keycard is needed - no fuse required. The door has independent power.
- 3
Loot Contents
- • 1 Elite crate
- • 1 Military crate
- • 2 Regular crates
- • High chance of tier 3 items
Value Assessment: While the red room has good loot, many players skip it due to the high radiation and the value of red cards for other monuments like Launch Site or Military Tunnels.
Loot Locations & Spawns
Puzzle Room Loot
- Green Room: 3-4 crates, basic tier
- Blue Room: 1 military, 3-4 regular
- Red Room: 1 elite, 1 military
Free Loot Spawns
- Tunnels: 5-7 regular crates
- Side Rooms: Barrel spawns
- Surface: 1-2 brown crates
- Water Areas: Component boxes
Why Sewer Branch is Underrated
Despite requiring radiation protection, Sewer Branch offers excellent value:
- Low Competition: Many players avoid it due to radiation
- Fast Puzzles: Both can be run in under 4 minutes
- High Crate Density: 15+ crates in a small area
- Card Spawns: Good chance for blue/red cards
PvP Strategies & Counters
Common PvP Scenarios
Entrance Camping
Players camp the single entrance/exit point. Counters:
- • Listen at the top before descending
- • Drop items if heavily loaded
- • Use ladders for quick peek
- • Coordinate with teammates
Tunnel Ambushes
The dark, narrow tunnels favor defenders. Counters:
- • Use flashlight tactically (on/off)
- • Listen for footsteps in water
- • Check corners carefully
- • Bring shotgun for CQB
Recycler Control
Teams control the surface recycler. Counters:
- • Use during off-peak hours
- • Have teammate guard ladder
- • Recycle in small batches
- • Scout before recycling
Escape Strategies
When trapped underground:
- 1. Wait them out: They need radiation protection too
- 2. Fake directions: Make noise in wrong tunnel
- 3. Drop loot: Stash valuable items to retrieve later
- 4. Logout play: Despawn in safe corner (last resort)
Pro Tips & Tricks
Efficiency Tips
- Run both puzzles with one fuse (be quick)
- Bring extra hazmat suits (they break)
- Use water to reduce rads between rooms
- Mark your path with torches
Advanced Strategies
- Build nearby for quick hazmat repairs
- Control entrance with auto-turret
- Farm during thunderstorms (less players)
- Use as starter monument for cards
Hidden Value
Sewer Branch is the perfect "starter monument" for new players with radiation protection. Low risk, good loot, and teaches all puzzle mechanics. Many experienced players skip it, leaving more loot for you!
Quick Reference Card
Requirements
- • Green + Blue Cards
- • 1 Electric Fuse (both puzzles)
- • 25-40 rad protection (Hazmat)
- • Flashlight/Torch essential
Expected Loot
- • 1-2 Military crates
- • 10-15 Regular crates
- • 1 Elite (if red card)
- • High card spawn rates
Time Investment
- • Green puzzle: 90 seconds
- • Blue puzzle: 2 minutes
- • Full clear: 5-8 minutes
- • Respawn: 15-20 minutes
Ready to Master More Monuments?
Check out our complete monument guides and calculators!