Kill Giant Radscorpion

Kill Giant Radscorpion is a quest in Fallout: Brotherhood of Steel.

Quick walkthrough

 * 1) Get the key from Richard;
 * 2) Head to the warehouse;
 * 3) Kill all the radscorpions;
 * 4) (optional) Find Medical Supplies for Vidya/Jesse;
 * 5) (optional) Collect Radscorpion Tails for Armpit;
 * 6) Kill Giant Radscorpion;
 * 7) Report back to Richard.

Detailed walkthrough
First, its claws, which it uses like shields, need to be destroyed by attacking them with a melee weapon. It is then vulnerable to gunfire. Note that it still has its stinger for attacks, which needs to be dodged. Once the giant radscorpion is defeated, the warehouse will be clear, and the Initiate will be prompted to return to Carbon.

Reward
The Initiate will receive 200 Experience Points on completion of the main quest section, plus 300 XP for defeating the giant radscorpion.