Free Adytum from the Regulators

Free Adytum from the Regulators is an unmarked quest in Fallout.

Detailed walkthrough
After giving the Blades the weapons, the Vault Dweller will be offered by Razor to crush the Regulators. One may choose to join them or handle the Regulators without the aid of the Blades.

In any case, the Vault Dweller needs to go to Adytum and kill all the Regulators, their leader Caleb, and Jon Zimmerman himself. If the quest is completed with the aid of the Blades, the Vault Dweller will receive a reward of 2000 XP. If it is completed alone, the reward is reduced to 500 XP.

Rewards

 * 500 XP, if the Vault Dweller attacked the Regulators without the aid of the Blades
 * 2000 XP, with aid of the Blades

Bugs
Sometimes, if the Vault Dweller speaks to Razor about Zimmerman to warn him, kills all Regulators by himself, and comes back, Razor will appear dead.