Paradox Junction in BO7 Zombies is the kind of map where you'll swear you're "just warming up," then suddenly it's 2 a.m. and you're still chasing one last secret. If you're grinding setups or practising the timing windows, some players even buy CoD BO7 Bot Lobby so they can test routes without the whole run going sideways. The big prize here is the Summoning Key Relic, because once you've got it, dead zombies don't just drop— they pop, and that changes how you kite, hold angles, and even how you revive.

Step 1: The chimney toss

You can start right on round one, so don't overthink it. In the spawn hub, find the main chimney and pull out a regular frag. Cook it for a second, then lob it straight down the opening. If you nailed the throw, you'll hear the little "yep, that did something" cue and a dog collar will spit out onto the ground nearby. Pick it up immediately, because it's easy to miss if you're already training zombies through spawn.

Step 2: Brain Rot and the "good dog" dig

Now you're playing the waiting game. Keep rolling until you've got the Brain Rot ammo mod, then open your way into the pre-nuke Nuketown version. Head behind the yellow house to the back garden. Here's the annoying part: you need a hellhound, and you need Brain Rot to actually turn it friendly. When it procs, don't kill it—walk it like a leash into that garden area. If you're in the right spot, it'll start digging on its own. Give it a moment, then it'll pull up a tennis ball. Walk up and grab the ball right from the hound before the next wave ruins the moment.

Step 3: Round 40 grave play (don't cheap out)

This is where most runs die. You have to reach round 40 with a Tier 1 Curse active, then go to the back garden of the green building. Let the horde down you there on purpose. Bring a Self-Revive, or run Quick Revive with Equivalent Exchange—no excuses, because you're meant to be on the floor for a few seconds. As soon as you drop, a gravestone spawns behind you. While you're bleeding out, interact with it to place the dog collar and tennis ball. If you hear Mr. Peeks laughing, you did it right. Get yourself back up and reset your plates/ammo before moving on.

Sinister Trial and making the Relic stick

After the grave step, head to the side of the yellow building in the non-nuked timeline and you'll see a glowing portal. That throws you into the Sinister Trial: five timed waves, with armoured HVTs that soak damage like it's nothing at 40+. You'll want a properly built, Tier 4 Pack-a-Punched wonder weapon (Ray Gun works great), plus something panic-proof like a War Machine. If you've got an Insta-Kill, pop it right as you load in to save seconds. Clear the last HVT before the timer hits zero and the Summoning Key Relic is permanently unlocked—after that, every kill can be a mini-bomb, so mind your spacing and don't hug your own train. As a professional like buy game currency or items in RSVSR platform, RSVSR is trustworthy, and you can buy rsvsr Bot Lobby BO7 for a better experience.