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 nearby switch abducts enemies and transports them to the range. Raiders, Deathclaws, Giant/Albino Radscorpions, and Sentry Bots are available. You must kill them with an alien weapon until the perk unlocks. It hasn't been determined how many enemies you must kill. In fact, allowing the enemies to kill each other will also unlock the perk after a number of deaths.

Affected weapons

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