Curios and Relics

Up to the Challenge is an achievement/trophy for the Fallout: New Vegas add-on Gun Runners' Arsenal.

It requires the player to cause 10,000 damage with unique Mojave Wasteland weapons.

A "unique Mojave Wasteland weapon" is defined as any named unique variant of an existing weapon, such as Dinner Bell or Annabelle.

It can only be earned with unique weapons in the core game. For example, Maria can contribute to Curios and Relics, but A Light Shining in Darkness cannot. The Gobi Campaign scout rifle can contribute to Curios and Relics, but Christine's COS silencer rifle cannot.