Note: This add-on requires a significant amount of caps to acquire the necessary weapons. There are also new challenges added with this DLC, however they are tiered challenges and get progressively harder. The Gun Runners Arsenal is an add-on pack for Fallout: New Vegas, it consists of multiple new weapons, ammo types, and weapon modifications. Fallout: New Vegas Trophy Guide Road Map.Gun Runners Arsenal Challenge Guide, The Way I DidĠ3-07-2012Fallout: New Vegas Gun Runners Arsenal Challenge Guide, and another thing to note that's important is that Deathclaw kills at Gypsum Trainyard do NOT count AFAIK.