Man-Machine Interface

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

Challenge requirements
The player must kill 10 Mojave Wasteland Mr. Gutsies or sentry bots with brass knuckles, spiked knuckles, tire irons, or lead pipes.

Locations

 * The sentry bots at REPCONN Headquarters count towards the challenge. The sentry bots can only be summoned after setting off the alarms on each floor. There are a total of 12 sentry bots in REPCONN Headquarters. Note that the Mister Handies do not count.
 * Mr. Steels located in New Vegas Steel count towards the challenge and respawn every four game days.
 * Mr. Gutsies at Nellis Air Force Base also count toward the challenge.
 * There are 4 non-hostile sentry bots in the Securitron vault, behind a door, which requires a Repair of at least 60 to open.
 * The Mister Gutsy prototype in Nipton counts towards this challenge and respawns every three days.
 * Several Mister Gutsies and sentry bots near the Crashed Vertibird.

Effects
Grants 1000 XP upon completion.

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.