Fallout 4: How to Get All Story Achievements for all Factions

This Fallout 4 Ultimate Ending Guide will show you how to 100% achievement in the game by completing the missions for all the four factions: Minutemen, Brotherhood of Steel, Railroad, and Institute. Without any further ado, let's begin with the Process of achieving 100% Game Completion

In order to gain 100% achievement, you must complete missions for all the factions that are from Minutemen, Brotherhood of Steel, Railroad, till the Institute, but as you know you cannot do this in one go as you will be enemies with certain factions as you continue other factions questlines. That is why we created this guide in order to inform you about the 'Safety Saves' that will be your save file before taking any game-turning situation. At the end of the completion you must have two end game achievements:

• The Nuclear Option
• Fate of the Commonwealth

The first one that is the 'Nuclear Option' will be available once you complete all the questline for any faction(Minutemen, Brotherhood, or Railroad). Doing it for all three makes no sense, but just waste of time, therefore, we have recommended doing the questline for Institute as you will have the Fate of the Commonwealth instead of The Nuclear Option.

Now talking about the List of Missions you must complete before doing The Molecular Level quest. By doing these missions, you will not end up screwing up with any of the faction and also get what you are looking for(100% achievement). 

Main Missions:

• War Never Changes
• When Freedom Calls
• Unlikely Valentine
• Reunions
• Dangerous Minds
• Hunter/Hunted

Minutemen:

• The First Step
• Sanctuary
• Taking Independence
• Old Guns

Brotherhood of Steel:

• Semper Invicta

Railroad:

• Tradecraft

Institute:

• Mankind-Redefined
• Powering Up
• Nuclear Family

Now that you have completed the List of the above Mission, you can proceed with "The Molecular Level" Mission. The Real Game starts from here where you require the "Safety Saves". The First one you should you is when you receive the objective to talk to Virgil in the same quest. Thinking about which faction you should choose? Let us make it easy for you and recommend to Choose the Brotherhood of Steel first and then The Railroad. If you want to go with the Minutemen then it's completely fine as our point here is to get 100% achievement in BOLD.

Brotherhood of Steel

During the Molecular Level Quest go and talk to the Brotherhood and build the teleporter for them. Continue working for them until you get these two quests:

• Blind Betrayal
• Ad Victoriam

Continue with the Brotherhood to get The Nuclear Option and Fate of the Commonwealth then reload to your "Safety Save" and then choose the Railroad.

Railroad

During the Molecular Level Quest go and talk to the Railroad and build the teleporter for them. Then you will head for the quest Underground Undercover until you reach the objective "Continue working with Father". Start working for the Institute until you get these two quests:

• Mankind-Redefined
• Powering Up

Now you will get "End of the Line" quest, but you must continue with the Underground Undercover quest. Now save the File before selecting any Mission and call it as the "Safety Save 2". Continue with the Railroad until you get these two quests:

• Underground Undercover
• Rockets Red Glare

Continue with the Railroad to get The Nuclear Option and Fate of the Commonwealth then reload to your "Safety Save 2" and to finish it with the Institute.

Institute

Start with the End of the Line quest and continue working until you get the quest - "Nuclear Family". Then get to the Fate of the Commonwealth quest and thus you finish the game with all faction and have every quest achievement. Congratulations.