We Are Legion

We Are Legion is a quest in Fallout: New Vegas. This quest is one of a pair of mutually exclusive quests to resolve the battle between NCR forces stationed in Camp Forlorn Hope and Legion forces stationed in Nelson. Completing this quest prevents the completion of Restoring Hope, and thus prevents the NCR from reclaiming Nelson.

Quick walkthrough

 * Kill all NCR officers at Camp Forlorn Hope.
 * Report back to Dead Sea.
 * Reward: Liberator.

Because several of these officers are involved in the quest Restoring Hope, finishing this quest will cause Restoring Hope to fail. Other quests that begin in or involve Camp Forlorn Hope can be completed, as long as they're done before killing the officers for We Are Legion.

Behind the scenes
The quest's name is a refrence from *Mark 5:9, from the New Testament: "Then Jesus asked him, "What is your name?" "My name is Legion," he replied, "for we are many."

Bugs

 * Standing in the south-western most lookout 'tower', the space between the sandbags and the roof is an invisible wall, allowing the player to pop out through the entrance, open fire, then retreat behind said invisible wall. The NCR will perceive you are hiding in a room and will all run to the location and equip melee weapons, making the quest very easy.
 * Beginning this quest after having gone through every other dialogue option with Dead Sea may result in immediate quest failure, and endless Legion infamy gained.