Your already unstoppable, with power armor and the hologram rifle you can one shot kill deathclaws and when they hit, if they hit you, it hardly affects you.
That's not my point. Your character would become unstoppable.
On October 18, 2010 Bethesda Softworks announced that DLC will be available for New Vegas, in keeping with its predecessor Fallout 3. The first, named Dead Money, involves working alongside three other captives to find the treasure of the Sierra Madre Casino and adds new achievements, perks, terrain, enemies and decisions for the player, as well as raising the level cap to 35. It was released for the Xbox 360 on December 21, 2010 and for PlayStation 3 and PC platforms on February 22, 2011. Three further DLC packs are due to be released across all three platforms simultaneously in the months following the cross-platform release of Dead Money.According to sources at Bethesda, four more DLC packs are in production, with further two in consideration; a total of eight DLCs are planned for New Vegas. The possible names of three DLC packs ("Honest Hearts", "Lonesome Road", and "Old World Blues") have been found in the in-game text files.