Quake E2M1: The Installation Walkthrough (All Secrets)
Youtube Walkthrough: The Installation (E2M1) Video Walkthrough (All Secrets)
Rumble Walkthrough: The Installation (E2M1) Video Walkthrough (All Secrets)
When the mission starts there are 3 different routes you can go, two are dead ends for now - continue through the large room with water and you'll find a smaller room with the Gold Keycard. I recommend you grab Secrets 1, 2 and 3 since they will get you armor, ammo and health that's needed.
Once you have the Gold Keycard you'll want to visit the door that it opens. Pay attention to the walls and you'll see arrows pointing you towards this door, there will be a Gold Keycard symbol near these arrows and the door. After going through the gold door and riding the elevator up the path will split. If you want to get the Grenade Launcher this early in Episode 2 you'll want to take the right path and jump into the large room with water. Grab Secrets 4 and 5 in here before returning to the same elevator and going left instead.
Follow the left path after riding the elevator up around the large room with water from before and to a set of stairs. Right before these stairs you'll find a small cubby, inside will be the Blue Keycard. Make sure you get the blue card before going up the stairs. Keep following the path and you will reach a large cage with computer looking blocks inside of it. Press the button here to gain access to the elevator and then ride the elevators up to the top. It's a linear path from here to the end of the mission.
Secret #1
Secret #1: In the first large room you come to with water jump off the bridge and swim under the blocky wall, you can surface in this area to collect a suit of red armor.
Secret #2
Secret #2: You'll find this one inside of the room with the Golden Keycard. On either side of the room you'll see two metal grates that prevent you from dropping into the water below. Climb up on top of the grate and you can get into a secret room.
Secret #3
Secret #3: Again, in the room with the Golden Keycard you'll want to drop into the water. Follow the linear route through the water to a slipgate portal (this is the secret area) which will spit you out back onto land.
Secret #4
Secret #4: Open the door with the Golden Keycard, the right path takes you to a large lake, jump in and swim to the bottom. Shoot the grate you find at the bottom and follow the route through the water. When you find the Biosuit go straight up (it's hard to see once it adds the green hue, I know) and you'll surface in the secret room. Inside you'll find a Grenade Launcher!
Secret #5
Secret #5: Return to the same location as Secret #4 and swim to the bottom of the lake, shoot the grate again to open the passage. Once you get to the bottom shoot the second grate you see and you'll open another secret passage in the same room where you found the Grenade Launcher for the previous secret. This time a room opens with a Pentagram of Protection inside.
Secret #6
Secret #6: When you reach the large steel cage that has some computer looking things inside you'll find two dogs and an elevator that goes up. On the other side of this elevator you'll see some ammo, jump across the elevator and get into the small room, shoot the light on the wall to open up a secret passage with Quad Damage.
Secret #7
Secret #7: Drop down into the top of the steel cage with the computers and grab the armor at the bottom to uncover this secret.
