Who Dares Wins

 is a Fallout 3 quest and achievement that is added to the game in the Broken Steel downloadable content pack.

Enter the Presidential Metro
Entering the Presidential Sub Level from Utility, you will face several Mister Gutsys, and some Sentry Bots. After navigating through the sub level, the Lone Wander encounters M.A.R.Go.T  (Metro Authority Rapid Governmental Transit System), a semi-sentient A.I. whom the Lone Wander may talk to. Upon talking, M.A.R.Go.T will try to identify the Lone Wanderer, which can be bypassed through a speech check, or a high enough science skill to bypass security protocol. If the Lone Wander passes security checks, he is marked as 'friendly', and so the robots of the Presidential Metro will no longer attack. M.A.R.Go.T explains that there has been a breach in security in the Presidential Metro, caused by unidentified persons who have no internal body heat and are emitting lethal levels of radiation (which obviously are Feral Ghouls).

(Optional) Clear the security breach in the Presidential Metro
Completing this causes M.A.R.Go.T to turn the power back on, saving you from searching for the fuse.

Locate the Exit to Adams Air Force Base
Upon entering the Presidential Metro, the Lone Wanderer is faced by several Feral Ghoul Reavers, and Glowing Ones. It is very useful at this point to have been marked 'friendly' by M.A.R.Go.T, as the Sentry Bots and RoboBrains are helpful in dispatching the Feral Ghoul Reavers, who can be tough to kill. After killing all the Feral Ghouls, proceed down the corridor, through the equipment room (be sure to pick up the Nuka-Cola Quantum in here), and down the next tunnel. If you kill the Feral Ghouls as you go, you will soon clear the security breach. At the end of the tunnel, on the left is a Metro train. You will have to replace fuses on the main power box. They can be found on the Presidential Metro Sential Unit. You will have to kill it if you haven't already. Climb into the front, and activate the Metro Console to reach the Adams Air Force Base end of the Presidential Metro. At the top of the stairs is a locked door (average) behind which is a terminal to shut down the turrets just round the corner. After removing the Enclave Soldiers by the turrets, proceed on to Adams Air Force Base.

Retrieve your orders and equipment from the Resupply Crate
At the top of the exit stairwell, look left. The resupply crate is just behind the small building, by the wall. Contained inside are your orders, and a Tesla Cannon. The orders explain that opening the resupply crate triggered a beacon, and that the Brotherhood are to commence an assault on receiving that beacon to cover your entry.

enter the small shack and hack the computer turning off the turrets and make your way throw to the air tower avoid the flamers along the way (to save ammo call in an air attack on the virtabirds) you will also have to hack 2 more computers to shut down the second and third set of turrets.

Find the Access Terminal to lower the ramp on the Mobile Platform
The Access Terminal is at the top of the flight control tower, at the other end of the base. AS you walk through the base, keep an eye on the rooftops, as there are many turrets. You'll have to enter, fight through one hellfire soldier, climb the stairs, and there will be a terminal activate it, and head to the mobile platform.

Enter the Enclave Mobile Platform
Exiting the flight control tower, head down the stairs and take a left, heading through what was previously an Enclave Repulsion Field. See that big thing up ahead? That's the Enclave Mobile Base. There is a small ramp leading up to the door, so head up there.

Destroy the Enclave Mobile Platform with an Orbital Strike
The first thing you come across is another Enclave Repulsion Field. Using the terminal to the left, you can deactivate it (Science 80), set a timed charge (Explosives 50), or smash the control panel. Turning left and heading into the repair bay yields plenty of ammunition, as well as an encounter with Stiggs, who fixes the robots. Talking with him gives some great information:
 * The floor above is the Deathclaw research facility, so there may be one or two left.
 * There are only a few Enclave aboard compared to the usual amounts.
 * The facility is patrolled by Robots, who are all controlled through a mainframe, located on the floor above, in the middle.
 * To reach the Satellite Tower, you have to reach the Central Control Area, then to the launch platform. After the platform, you'll probably have to fight a lot of Enclave to reach the tower.

Heading up the ladder at the back brings you to the Deathclaw Research facility. Heading straight through the door ahead,and looking right and then round the corner to the left a little is a Deathclaw. If you got the Deathclaw Control Scrambler then release him, and let him wander, killing for you. Upstairs you can find the Slo-Burn Flamer. From entering, going upstairs to the front-left corner you will find the medical bay, and to the right, access to the mainframe. Hacking the mainframe requires 75 Science (Hard). The terminal allows you to shut down the robots, scramble the targeting parameters, or (using the Robotic Experts perk) target the Enclave. A terminal across from the mainframe allows you to unlock interior doors, exterior doors, and the armoury. Head towards the launch pad, using the ladder at of the mainframe room.

If you were able to set the Enclave as targets at the mainframe, then be happy! There are plenty of turrets and Sentry Bots up here that pretty much take care of the Enclave for you. Head to the Satellite Tower. Once inside, head to the top, to the terminal. Hit 'fire Payload', then chose your target:
 * Preset Target 01: Citadel
 * Preset Target 02: Project Purity
 * Preset Target 03: Megaton
 * Preset Target 04: Rivet City Carrier
 * Preset Target 05: Adams AFB Platform

Note only two of the targets can be fired upon: Adams AFB Platform, or the Citadel. Head through the door at the top back out to Adams Air Force Base, where Sentinel Lyons shows up in a hijacked Vertibird to get you out. Hop on, and away you go!

If you chose the Citadel: You are rewarded with negative karma, and on the flight back the pilots seem to think the Vertibird is malfunctioning when the Citadel won't respond to radio. Upon landing and seeing the smouldering ruins, they quickly pick up that it was you, and attempt to kill you, deeming you a traitor.

If you chose Adams AFB Platform: You are rewarded with positive karma, and the Vertibird lands a little off Adams AFB to allow you to watch the missiles strike. After hopping back on the Vertibird, you are taken to the Citadel, where Elder Lyons is waiting with a heart-warming speech of thanks.