Motor-runner’s Helmet is both a unique piece of apparel and a quest item needed to complete the “Bounty Killer” unmarked quest, given to you by Colonel Hsu. The helmet itself can be found on Motor-runner, who can be found in Vault 3.

Quick tips before you go get the helmet:

• Hostile Fiends in the area. Both the vault itself and the area outside of the vault are filled with hostile Fiends.
• Fiends inside the vault can be tricked. The Fiends inside the vault can be talked down with a Speech check of 64, or by wearing a Great Khan outfit. Doing this will allow you to assassinate Motor-runner without being bothered by the other Fiends.

Starting The Quest

This part is only required if you want to do the quest. If you just want the unique helmet, feel free to ignore this part of the guide.

To start the quest, start by going to Camp McCarran, located south of the Strip.

To enter Camp McCarran, locate and go through the metal garage door.

Follow the road leading to the right of the entrance.

You’ll eventually see multiple sets of doors, which act as the entrances to the lobby. Enter through any of the doors.

Once inside turn to the left. You’ll see a door leading to a small office far in the back. That’s where you’ll be able to start the quest.

Inside this office is one Colonel Hsu. Speak with him.

Tell him that you’re here to provide support, and he’ll explain some of the issues he’s dealing with.

Next, ask him about the fiends.

To start the quest, tell him that you’ll go to Vault 3.

Killing Motor-runner

Motor-runner himself is located in Vault 3. To get there, you’ll have to make your way through a location called “South Vegas Ruins”, which is located southwest of Camp McCarran.

Once in the area, look for a double door illuminated by burning barrels. That’s the way inside.

Once inside the area, look for an exit from the ruined building. It’ll be straight ahead of you.

Once outside, turn to the left. You’ll see a large ruined warehouse. That’s where the entrance to Vault 3 is located.

Go into the far left corner of the warehouse and wall down a slight slope.

You’ll see a console next to the vault door. Interact with it to enter the vault.

Inside the Vault, a Fiend will speak to you. You can either convince her you’re carrying drugs or taunt her, initiating a fight.

In either case, go through the door in the back of the room to proceed.

Follow the hallway to the right until you reach the end of the hall.

Take the staircase to your right.

Once you walk down the stairs, there will be another staircase leading down just around a corner, leading to another door. Go through that door.

You’ll appear in a room with 2 exits, one to your left, and one straight ahead of you. Take the one in front of you.

The hallway will split into 2 paths. Take the path to the left.

At the end of the hall, there will be another door to your right. Go through it.

Turn right again and go through the door you’ll see in front of you. Motor-runner and his two dogs are just behind that door. To get the helmet, you’ll have to kill him.

Once you have the helmet, go back the way you came.

Finishing The Quest

If you don’t want the helmet, you can go back to Colonel Hsu and tell him that you’ve killed Motor-runner, he’ll take the helmet from you and give you 300 caps as a reward.