Locations: New Vegas Strip, Lucky 38, The Fort
Enemies: Automated turret, Protectron, Sentry bot
Either activate or destroy Mr. House's secret army of Securitrons beneath Fortification Hill.
Find Mr. House's hidden bunker, buried beneath the Legion stronghold at Fortification Hill.
Explore the bunker.
[Optional] Upgrade the Securitron army, to use later for your own purposes.
[Optional] Destroy the Securitron army by overloading the bunker's reactors.
750 XP (if you upgrade the army)
500 XP (if you destroy the army)