Walkthrough (Nevada)

First, you need to talk to the doctor at the GU, then to the sergeant, who will give you the "Total Recall" quest.

After that, you need to arrive in Reno and talk to Mordino at the hotel, who will tell you about Stryker's evacuation bunker.

You need to gain access to the bunker (see Reno, Stadium), where you can use the crumpled piece of paper (you have it from the start) to use the computer and talk to the bikers. This will unlock the Bridgeport location (see Bridgeport).

In Bridgeport, you'll learn that Jay Fukish is hanging out in Hawthorne.

In Hawthorne, a message from Jay will appear in your Pip-Boy. You need to take the jammer and install it on the radar equipment (see Hawthorne). If the conversation with Jay Fukish doesn't start after this, you need to go to Area 51. This is a bug.

After this, the conversation with Jay will start. After the conversation, don't forget to pick up the mysterious device from the floor. He'll say he left it at Area 51, but that's a lie—the part will be lying right under his feet.

Afterwards, take the device to the Main Control Center. There, the story will advance and you'll be sent to look for the Overseer. Sometimes the script may not trigger if you arrive by car and go straight to the Main Control Center location.

To find the Overseer, you'll need a radar installation in Battle Mountain. Caravanners (with high reputation) or the SLS Sheriff (with good reputation or for money) can help you find the BM. 

In the BM, you need to start the generator in the building, then try to open the door and talk to Phil, who will open it. The computer will contain information about the direction the Overseer was taken.

You'll need a train, which is parked at the SLS train station. For information on starting the train, see SLS.

Then you'll need a helper—one of those guys who tell stories about lost jobs and ask for a job. The easiest way is to find the one standing in the SLS, near the entrance to the police building, but they're all the same. He'll ask for $1,000, and the others will also need $1,000 for a ticket to the SLS.

Then you need to find the assistant in the SLS hotel (Business Center) and send him to the train station.

At the train station, you need to start the train, and you'll end up in Blagovatnoye (see Blagovatnoye).

After leaving the train station, you'll receive a message that things are bad at the Main Directorate.

Arrive at the Main Directorate and talk to the soldiers. If you don't be rude to them, they'll take you to the colonel peacefully. You can kill him (good ending for the Main Directorate) or give him the device (bad ending for the Main Directorate). After the conversation, you can start a fight, so don't rush into war.

If you choose the combat route, you'll get some cool partners: a robot (you need to fix it first) and Sergeant Graves. If you want to make the Sergeant stronger, then when you take him into your group, put armor and any light weapon with ammo in his inventory (by stealing), in the dialogue with him, click "behavior" and then click the buttons "best weapon" and "best armor." He will put on what you gave him. The stronger the weapon and the stronger the armor, the better, but keep in mind that he will not give them back. :-) 

On the second floor, in the middle room above, there's a "Combat Armor" in a metal locker. 

After you hand over the device or install it (on the third floor of the safehouse, look for the second elevator; you don't have to kill all the enemies), it's all over. THE END! 

P.S. Of course, the "Tirelessness" perk will allow you to continue playing. And there's still a lot of interesting stuff there. For example, it's worth checking out BR

if you play after completing the game. Your partner, Robot, will stay with you. And the vendors have a lot more weapons (including the Gauss Rifle and other equally fun weapons that you simply couldn't find before).

Source: doc.