If you go to the location provided on the map above and below, you’ll come across a small door with a red neon light above it. This will transport you into a strange, otherworldly place known as the Vault of the Rampager. The bad news is, there’s a number of targets on the way that you’ll have to shoot. Talk to the robot again, and pick up the Bad Vibrations quest. In Borderlands 3, there are certain chests that will always have exceptional loot (and a much higher chance of containing epic or even legendary loot). These Red Chests can be found in each region - sometimes at the conclusion of a boss fight or hidden in a side mission, and while their level is tied to the region, they can be reopened when quitting and restarting the game. Go inside the vault.
Before placing the brain into the machine, go into the small room on the left to find the red chest.There is only one red chest in Neon Arterial, and you don’t have to be in any main or side mission to find it. Head long the north side of the massive dome, and you should find a garage area with a half-opened garage door you can slide under. To the left of the door is a booth full of burning grills.
When you reach the dead end, look left to see the second red chest in Atlas HQ.To get the third chest in Atlas HQ, talk to Rhys in the CEO’s office when he has the yellow exclamation point.
Enter and move left to the end of the large room, and look behind a very large tank to find the Red Chest on the other side hiding in the corner. Defeat The Rampager, and walk through the shimmery, purple doorway. Now, we’re going to approach it from the elevated platform at the southeastern wall of the factory / fortress. Aim for the window of the shack you’re trying to get into.
The red chest is right there.You’ll gain access to the three Meridian Metroplex Red Chest locations as you push on through the Hostile Takeover mission.
We’re gonna start by sliding through a garage door that’s below the glowing Children of the Vault sign and the number 17. Once it leads back to the previous area, jump over some green containers to find the bridge, and the Red Chest is located at the other side. After the boss battle, the game will direct you to play Mouthpiece’s Organ. This time, when you defeat the boss - you'll be instructed to use the organ in the next room, and this will unlock the far door to reach a Red Chest. Inside, you’ll find the Laser Control Room fast travel station, and the red chest is right next to it.The first red chest you can find in Atlas HQ in Borderlands 3, you’ll first have to play through the Atlas, at Last mission until you kill Katagawa Jr. Once you do, turn around and go back inside the building through the doorway just below the place where you slid down into the arena. Near the end of the driving section, you’ll roar into a Children of the Vault stronghold. Fight your way through the amusement park in the southeast area of the map until you reach the room where the coaster is located. So, go inside the stronghold, and walk through the green-lit corridor. Follow the corridor described above to the south, then to the east.
Climb on top of them, and you’ll find the chest easily.Next, we’re going to the central north of the area, as indicated on the maps. The second of two Red Chests in the Devil's Razor is a bit trickier to find as it's technically located out of bounds on the map. You need to know where to find red chests in Borderlands 3 in order to complete all the maps 100%. There’s a smashed vent above that “screen,” so climb inside and go right.
Our goal is to climb to the top of the tower. Jump onto the boxes on the right, then drop down to the containers below. A locked door on the end holds the Red Chest, but first you'll need to get into the rollercoaster and shoot at several bullseye targets as you race through the attraction. Once you kill the boss and get a message from Tannis, turn to the south of the area, and you’ll spot a door that’s gonna open. Behind it, you’ll find the Bridge of the Jewel fast travel station, and the red chest is in the corner of the room.While you’re on board the Family Jewel, go to the opposite side of the Family Jewel. The second of the two Red Chests located in the Cathedral of the Twin Gods is technically an extra reward for taking on a challenge.