The Same Could Be Said of All Religious Weapons

The Same Could Be Said of All Religious Weapons is a challenge added in the Fallout: New Vegas add-on Gun Runners' Arsenal

Obtaining
To complete it, you must kill 15 Feral ghouls with Maria, Gehenna, or the Holy Frag Grenades.

Behind the scenes

 * The title of this challenge is a reference to a quote made by Dracula in Castlevania: Symphony of the Night. When accused by Richter Belmont of "stealing men's souls and making them his slaves", Dracula responds by saying, "perhaps the same could be said of all religions."