Commando Chest Pieceīonus: Action points refresh at a faster pace Becky and Fallon’s Basement is in the Diamond City. Location: Go to Fallon’s Basement and speak with Becky to purchase it. Location: Go to Diamond City and speak with Myrna to purchase the Champion Chestpiece. You meet Lucas Miller naturally through story progression. Location: Speak with Lucas Miller to get the Champion Left Arm Unique Armor. Needless to say, if you become hostile to the Institute you will lose access to this faction's vendors.Location: Head over to Bunker Hill and speak with Deb to purchase the Black Ops Right Shinguard Unique Armor. The Wazer Wifle is an end game weapon only available after completing three unmarked quests to fetch items from the wasteland. The super powerful Experiment 18A is available very early on in the Institute quest line, you can pick it up immediately after speaking to each of the department heads before you first leave the Institute.
The Minutemen don't really have anything all that special, certainly not before taking back the Castle but then you do get access to a Gauss Rifle. Sentinel's Plasmacaster Plasma Thrower, sold by Teagan on the Prydwen after reaching the rank of Sentinel.Death From Above Missile Launcher, sold by Teagan after reaching the rank of Paladin.Visionary’s T-60c Helm, for completing A Loose End.Survivor's Special Laser Rifle, potential quest reward for completing The Lost Patrol.Steadfast BOS Combat Armor Chest Piece, potential quest reward for completing The Lost Patrol.Righteous Authority Laser Rifle, quest reward for completing Call to Arms.Exemplar’s T-60c Torso, reward for completing Duty of Dishonor by persuading Clarke to turn himself in.AX90 Fury Plasma Rifle, sold on the Prydwen.Needless to say, if you become hostile to the Brotherhood of Steel you will lose access to this faction's vendors. With the exception of Righteous Authority, all of the weapons below require progression through the Brotherhood of Steel quest line to the point where you have access to the Prydwen, and then some more require you to hold a particular rank within the Brotherhood. I'm not going to include Diamond City or Goodneighbor in this list because if you become hostile to them that's your own fault! Sold by Deb in Bunker Hill Such examples include the Battle of Bunker Hill resulting in the deaths of vendor NPCs like Deb, and Human Error resulting in the citizens of Covenant becoming hostile you, like Penny Fitzgerald. In addition to the above list, there are a variety of instances throughout the game where as a result of your actions a NPC vendor will become hostile to you.