How to Do Sewer Branch Puzzle in Rust

Table of Contents

The Sewer Branch is one of Rust’s early-game monuments, offering loot, resources, and a Blue Keycard for progression. While it’s a relatively simple puzzle, knowing the exact sequence ensures you leave with maximum rewards.

Essential Items for Sewer Branch

Before attempting the puzzle, gather these items:

Tip: Green Keycards spawn at gas stations, supermarkets, and fishing villages.

Locating the Sewer Branch

The monument is medium-sized and easy to spot along roads. Look for:

• A rusted metal tower and worn-down buildings.
• Exposed sewer pipes and tunnel entrances.
• Its distinct marker on the in-game map.

Potential Hazards

• Other Players: A common hotspot for early-game PvP.
• Radiation: Higher levels near the central silo.
• Wildlife: Wolves and bears sometimes wander near the site.

Clear the area before starting the puzzle sequence.

Sewer Branch Puzzle Walkthrough

Step 1: Find the Primary Structure

Head to the main building near the parking area. Inside, locate the fuse box.

Step 2: Install the Fuse

• Place your Electric Fuse into the fuse box.
• Without it, the Green Keycard door will remain locked.

Step 3: Activate Power

• Flip the nearby power switch.
• This powers up the electronic systems and unlocks the card reader.

Step 4: Enter the Sewer Tunnels

Exit the building and move toward the underground pipelines.
Look for the large, corroded pipes leading into the tunnel system.

Step 5: Use the Green Keycard

Deeper inside, you’ll find a locked door with a card reader. Swipe your Green Keycard to gain access.

Step 6: Collect the Loot

Inside the puzzle chamber:

• A Blue Keycard (your main objective).
• Military crates with weapons and gear.
• Components, scrap, and extra loot spawns.

The Blue Keycard will let you progress to higher-tier monuments such as the Airfield and Power Plant.

Additional Loot Areas in Sewer Branch

• Recycler: Located near the vehicle lot.
• Oil Processing Facility: Found underground for refining crude oil.
• Scattered Barrels and Crates: Extra scrap and components.

Strategy Tips

• Stay Alert: Tight corridors make ambushes likely.
• Carry Extra Fuses: Prevents wasted trips if one burns out.
• Time Your Exit: Combat often breaks out once loot is claimed.
• Recycle Before Leaving: Convert road signs, tanks, and other materials into scrap.

Conclusion

The Sewer Branch puzzle is one of the most reliable ways to get a Blue Keycard early in Rust. With a fuse, Green Keycard, and basic protection, you can complete the run in minutes. On high-population servers, expect competition and ambushes in the tunnels, but with careful planning you can secure loot consistently and gain a strong early-game advantage.