The Courier (quest)

The Courier is a quest in the Fallout: New Vegas add-on Lonesome Road.

Quick walkthrough
This quest is triggered by entering Ulysses' Temple for the first time during the quest The Divide. Follow the short path to a terminal. It can open the door to the main hallway, which leads to Ulysses, and also to the maintenance bot room, which contains ED-E. Rescue ED-E for the optional part of this quest. Then follow the main hallway to an elevator down to Ulysses Temple. You now have to "Deal with Ulysses". Do this however you seem fit then either attempt to stop the warheads, or launch them yourself. This ends the quest and starts either The End or The Apocalypse, depending on how you chose.

Ulysses have a high health and is capable of using stealth-boys.

If did you decide to fight him, be aware of Ulysses eyebots healing his injuries and providing fire support, the best way to take care of the eyebots is hacking a terminal, left at the missel. Or the best and fast way to kill him: two fatman shots.

Marked men will show up after the battle begins.

If did you decide to spare his life, you have to pass a high spech check, then Ulysses join the player agains the marked men.