Quake E4M1: The Sewage System Walkthrough (All Secrets)
Youtube Walkthrough: The Sewage System (E4M1) Video Walkthrough (All Secrets)
Rumble Walkthrough: The Sewage System (E4M1) Video Walkthrough (All Secrets)
At the start of the mission you'll want to fall down into the hole and start clearing. It won't take long for you to find the locked Gold Keycard door, for now ignore it and swim through the water that's below you. All of the arrows are pointing in the direction we need to go so follow them to an elevator.
Ride the elevator up and make sure you claim Secret #1 in this area for the Quad Damage. Follow the path until you find the Gold Keycard, grab it then jump down and open the door that's right there. Keep following the linear route through the level, when the Quad Damage you have is about to run out you should be in the area that Secret #2 is found. Make sure you grab this secret for another Quad Damage power up!
Keep following the path until you find a switch that opens up additional floodgates. Once you hit that jump down into the entry room of this level and go through the newly opened passage. If you get lost in the water follow the arrows just like before. You'll be lead to the area with Secret #3, there will be another button to push here too nearby where the slipgate portal is for Secret #3.
Dive into the water and swim down, follow the arrows on the walls and you will come to a medium sized underwater room. Enemies will fall out of the ceiling in this room - grab Secret #4 when they do and then keep following the arrows to the exit.
Secret #1
Secret #1: The first secret is found in the room with the laser beam wall traps. You will find an elevator in water that you need to ride up to a closed in hallway; in this hallway you'll want to shoot the wall panel that looks completely different than the walls around it. You'll find some armor and a Quad Damage.
Secret #2
Secret #2: Our next secret is in the medium sized open hallway, shortly after secret 1. You will see the Quad Damage (part of this secret) sitting on a ledge that you can't obviously reach. In order to open up the wall and reach it you'll need to jump while running up the ramp and use your head to hit the light above.
Secret #3
Secret #3: The room that is above the final room of the dungeon will have a switch just above the door that you enter/exit from. Shoot the switch on the wall and you'll open up a small alcove with some Nails and a slipgate portal in the adjacent room.
Secret #4
Secret #4: You'll find the final secret while swimming to the exit portal. While swimming through the various tunnels you will find one area with a ceiling that opens up and enemies fall out. Surface in the area where the enemies fell from and jump onto the platform for this secret. This is the easiest one in the level to find.
