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) Activate the switch and keep killing the raiders and deathclaws with an alien weapon (works with drone cannon and drone cannon Ex -8) until the perk unlocks.

Found that simply activating the 'shooting range' repeatedly and allowing the creatures summoned to kill each other will activate the perk (XBOX 360)

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