U4gm Black Ops 7 Zombies Ol Tessie Repair And Upgrade Walkthrough

When you first drop into this map, getting Ol’ Tessie built is one of those jobs you’ll wanna knock out straight away. Trust me, it makes holding choke points way easier and gives you breathing room in those early waves. I’ve seen plenty of players waste time opening half the map before even touching it – don’t. You can get it done fast, and it’ll pay off big. If you’ve played CoD BO7 Bot Lobby setups before, you’ll know how much a good defensive tool can change the flow of a round.

First up, you need three parts. Part 1: Power Core – easy grab. It’s right there in the Crash Site, sitting on a crate next to Quick Revive. You’ll probably walk past it on your first loop, so scoop it up while you’re farming your starter points. Part 2: Focusing Crystal – open the door to the Research Labs, head to the far wall, and there’s a bench covered in papers and beakers. The crystal’s glowing blue, impossible to miss. Part 3: Conduit Array – this one’s in the Power Control room. Flip the power, then check the slightly open electrical cabinet. It’ll be sparking a bit, so grab it quick because zombies tend to rush in when the lights kick on.

Once you’ve got all three, head to the Hub. There’s a big workbench with a blueprint spread out – that’s your build spot. Hit the prompt, and Ol’ Tessie springs to life, frying anything dumb enough to wander close. It’s solid, but don’t think it’s indestructible. Heavy zombies will pound on it, and when you see smoke and wild sparks, it’s time for repairs. Walk up to the base, pay 1500 points, and you’re back in business. Honestly, keeping Tessie running is worth every point.

Upgrading it is where things get spicy. Step 1: Charge the Soul Canister – rack up 20–25 kills inside Tessie’s zap radius. You’ll see blue wisps fly into it, and when it’s full you’ll hear a distinct power-up sound. Step 2: Defeat the Tempest – next round, a tougher, meaner Tempest shows up. Drop it fast, and it’ll leave a “Charged Aetherium Lens.” Don’t miss picking it up. Step 3: Install the Upgrade – take the Lens back to Tessie, hold the interact, watch the short animation. It powers down, then roars back with a deep purple glow. Now it chains lightning to hit up to 10 zombies at once, and the damage jump is huge. It’s the kind of upgrade that can carry you deep into high rounds without breaking a sweat.

If you play smart and keep Tessie maintained, it’s basically your best friend on this map. I’ve had runs where it single-handedly kept a lane clear while the squad handled objectives elsewhere. And yeah, upgrading it takes a bit of effort, but the payoff is massive. For anyone chasing big round numbers or just wanting a smoother ride, it’s worth every second – same way CoD BO7 Bot Lobbies for sale make grinding way less painful.U4gm makes CoD 7 lobby access fast, safe, and ultra-competitive.