Search the sewers

"Who knows what technological marvels await in the city sewers."

- Mission description

Search the sewers is a mission in Ratchet & Clank (2016 game) taking place in Blackwater City on planet Rilgar. Ratchet and Clank searched here to find look for equipment. They eventually found the Shady Salesman, who gave them the Trespasser, and asked them to find holocards with schematics for a weapon known as the RYNO. This mission was required to begin the mission "Find the top secret Blarg research project" on the Blarg Tactical Research Station in Nebula G34.

Walkthrough
This is a mandatory mission, and involves little combat. From the ship's starting point, travel left to the metalic bridge and use the Swingshot to latch onto a versa-target over to a small raft, then use the next versa-target to reach a sewer pipe. Travel down the elevator inside here and in front of you is a pool with deadly pool sharks. Use the Hydrodisplacer on the plug by pressing next to it to drain this pool, then kill the prone sharks with the OmniWrench and travel up the wall to the next spot. This contains an empty wall in front of you, and using the water from the previous plug, attach the Hydrodisplacer and fill the water in front, allowing you swim up to a tunnel.

Smash the barriers in the tunnel here to come out on the other side. Here reveals another pool with a shark, so plug the Hydrodisplacer to drain the pool, jump down and kill it, then travel through the tunnel and destroy the barrier. Head back up to the Hydrodisplacer plug with the ladder, and fill the water back up, then jump down and swim through the tunnel. Up in the next area, destroy the crates for bolts, then slide down the sewer pipe to a small, dead-end room.

In this room, press the green button. This will open the door in front of you, but cause the room to keep filling with water. Run forward through the linear sections, jumping through platforms and avoiding amoeboids, and making frequent use of the Heli-Pack to stretch jump forward. Ensure that you don't fall off any platform or get hit by amoeboids so that you can continue uninterrupted. Eventually, you will end up in a circular tunnel leading upwards, surrounded by blue, and the water will stop rising. From here, head forward until you find an elevator, then take the elevator to an outdoor area, the Blackwater Market.

Here, you will find the Shady Salesman, who will ask for RYNO holocards. He will give you a Trespasser. An orange forcefield blocks your way out, so use the Trespasser in the Invinco-Lock to the left of the exit by pressing to begin. This begins a short minigame in which you have to connect lasers to ports. Press or  to move the first laser to the port, and press  to move to the lower ring and then move the next laser to the next port. This will open the forcefield and allow you to obtain your first RYNO holocard. Stand on the green button on your way out, then use the taxi to leave back to your ship.

Before leaving the planet, if you have not already, complete "Travel to the hoverboard event" and "Win the hoverboard race" to earn enough bolts to purchase remaining weapons.