Man-Machine Interface

Man-Machine Interface is three-star (★★★) challenge added in the Fallout: New Vegas add-on Gun Runners' Arsenal.

Obtaining
To complete this challenge, you must kill 10 Mojave Wasteland Mr. Gutsies or sentry bots with brass knuckles, spiked knuckles, tire irons, or lead pipes.

Behind the scenes
This challenge is named after a term referring to everything a person uses to interact with a computer: keyboard, monitor, printer, et cetera.