Battle of Nerves is the last chapter in the Moscow episode of World War Z.
Your main objective is to get to the nerve gas facility and activate the system.
Here’s a walkthrough of Battle of Nerves (Moscow) in World War Z.
Reach bunker entrance
You will spawn outside the bunker. Head towards the entrance.
Keep going inside the tunnels.
There’ll be zombies along the way. Kill all of them. They may appear behind you as well.
Clear out this area as well.
There’ll be a swarm of zombies coming. Prepare defenses by setting up the defence kits you find (e.g. high voltage grid).
You may find a machine gun here as well. Deploy the machine gun before the swarm arrives.
As Svetlana attempts to open the door, you have to defend her by killing the swarm of zombies.
You can use the mounted machine guns.
Make your way through the bunker
Once she opens the gate, get through the bunker.
Keep going until you reach this area where you have to assemble. Open the other door using the control panel.
Navigate through the bunker
You will meet more zombies inside the bunker.
There’ll be enemy autoturrets inside. You can either destroy them or turn them into yours. They would come in handy against the zombies.
There’ll be another enemy autoturret here.
Get behind them and hold “E” to turn them into your own.
Keep going ahead and clearing the zombies.
Call the elevator
You will reach a place where you have to call the elevator.
While it’s coming, you need to hold position.
There’ll be plenty of zombies on the way. Kill the screamer if you see one.
Navigate through bunker
After the elevator comes, continue going through the bunker.
Open this door by interacting with the control panel.
Continue going forward.
You will reach stairs spiraling up. Keep going up while clearing the zombies.
Kill the screamer to prevent more zombies from coming.
Head towards the lab by going upstairs.
Regroup in the lab
Activate the console
Inside the lab, activate the console to see how the nerve gases kill the zombies.
Once it’s over, head towards the assembly point.
Activate the central console
Next, you’ll reach the place where the nerve gas systems are. Activate the central console in front of you.
There’ll be swarms of zombies in this place. You have to follow the mixing procedure for the nerve gas.
This means you need to activate the consoles in order (there are 5 in total).
The first one is console E. Head towards it and activate it.
While doing so, the other team members should try to clear the horde.
Next would be console A.
Followed by console H.
The fourth one is to activate console K2. It’s beside K1.
Lastly, you have to activate console B.
After activating the five consoles, you have to get back to the central console and activate it.
The mission completes here and the gas will be spread throughout Moscow.