Xenotech Expert

Xenotech Expert is a perk which is added to Fallout 3 in the Mothership Zeta add-on.

It increases the damage done with alien weapons by 20%.

Obtaining
To get this perk you must find a "shooting range" in the Weapons Lab (A room with an alien atomizer and an alien disintegrator next to a switch). Activating the switch closest to the door summons Brahmin, while activating the far switch teleports abductee enemys to a second range. Raiders, Deathclaws, Giant/Albino Radscorpions, Yao Guai and Sentry Bots are available. Killing, or simply watching the enemies kill each other, will unlock the perk. It may be necessary to hit the switch multiple times before the trigger is fulfilled for the perk.

Affected weapons

 * Alien Atomizer
 * Alien Blaster
 * Alien Disintegrator
 * Atomic Pulverizer
 * Captain's Sidearm
 * Destabilizer
 * Drone Cannon
 * Drone Cannon Ex-B
 * Firelance
 * Shock Baton

Bugs

 * The damage for the Captain's Sidearm doesn't change in the Pipboy with Xenotech Expert.
 * This perk may affect Assault Rifles and Chinese Assault Rifles. (unconfirmed)

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