Never Axed For This/Fallout: New Vegas

Never Axed For This is a challenge perk in Fallout: New Vegas added with the JSawyer mod.

Effects
You can obtain it by dealing 1600 damage with axe-type weapons. You gain +2% critical chance (per rank) with the fire axes, Knock-Knock, hatchets, throwing hatchets, tomahawks, proton axes, proton throwing axes, and the inversal versions of those weapons.

Behind the scenes
This perk refers to the tagline of Deus Ex: Human Revolutions teaser trailer: main character Adam Jensen intones on how he 'never asked' for this'.