Fallout 4

84 Achievements

1,600

6-11h

Ad Victoriam

Complete "Ad Victoriam"

1.95%

How to unlock the Ad Victoriam achievement in Fallout 4 - Definitive Guide

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TrueAchievements

To get this achievement, you'll need to side with the Brotherhood of Steel and complete all their quests.

When you do The Molecular Level quest, you'll want to take schematics to the Brotherhood. Build the Signal Interceptor and Elder Maxson will give you a mission to get Doctor Li to join the Brotherhood again, do this quest (if you fail to recruit Doctor Li you will end up getting a different quest, recruiting Doctor Scara thanks to Wyyvern) and complete Institutionalized. You'll go back to Commonwealth to Elder Maxson, he'll give you the quest Liberty Reprimed. After this quest he'll give you Blind Betrayal, complete this to get the quest Tactical Thinking. (You'll get to kill the Railroad)

Once you get rid of the Railroad return to the Brotherhood and you'll receive Spoils of War this is the point of the game where the Institute will become hostile. Once you complete this quest you'll start the final mission called Ad Victoriam.

If you're going to vote negatively, tell me why.

108

14 Comments

It seems 2 ppl want you to get the chievo for them

, good enough for me

By oO Twanger Oo on 03 Dec 2015 17:53

I'm thinking that as well lol.

By on 03 Dec 2015 17:56

Do I have to complete every cleansing the common wealth quests in order to get this achievement?

By Leon Kennedy226 on 06 Dec 2015 08:13

No those are infinite. Those are not main quests.

By on 06 Dec 2015 16:52

Then what quests do I need to complete for the brotherhood?

By Leon Kennedy226 on 06 Dec 2015 23:57

Have you looked at the solution on joining the brotherhood.

By on 07 Dec 2015 00:04

Then what quests do I need to complete for the brotherhood?

By Leon Kennedy226 on 07 Dec 2015 02:14

I listed them in the solution....

By on 07 Dec 2015 02:26

Then what quests do I need to complete for the brotherhood?

By Leon Kennedy226 on 07 Dec 2015 19:13

Elder Maxson will give you a mission to get Doctor Li to join the Brotherhood again, do this quest and complete Institutionalized

Do I have to get Li back? On my playthrough, I rejected to join the Institute (making it so I had to leave immediately) but I still completed Institutionalized. I don't have any save files from before I did this, so...

By Wyyvern on 09 Dec 2015 10:50

I actually do not know, I assume you do because she has to do with the later quests. Try to continue with the brotherhood and let me know please.

By on 09 Dec 2015 17:41

Sorry I took a while, but I can confirm you don't need to side with The Institute and get Li back to get to this quest and achievement. Maxson gets mad at you for about 20 seconds then gives you Liberty Reprimed anyway. You're tasked to recruit a "Professor Scara" who I assume takes Li's place.

By Wyyvern on 13 Dec 2015 22:07

Pretty sure people who vote negatively is because you don't have the achievement

By on 28 Dec 2018 14:12

done quest no achievement how is Bethesda this dogshit

By Horizon Thor on 17 May 2024 17:20

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amenazamenor JF

TrueAchievements

07 Dec 2015 20:31

This is the last achievement in the Brotherhood questline (excluding The Nuclear Option, which can also be achieved siding with the Minutemen or the Railroad).

While the solution by HardcoreBabyGrl shows perfectly how to get this achievement, I wanted to share a chart I made with the way of getting all the story achievements with only one save / reload, and also the best point to save in order to obtain all 4 endings (not necessary for achievements).

Scroll down for a more detailed explanation (inside the Spoiler Tag, as it is an awful lot of text).

For starters, keep in mind a thing: having high charisma will help you when you'll have to balance several factions at once. I recommend having at least 6-7 points of charisma, and using "charisma-enhancer" gear like Glasses, Hats or Suits, or even using, when neccessary, beer or some drugs as Grape Mentats or Day Tripper that give charisma points for a few minutes.

Open this thing for the full explanation:

START MAIN MISSIONS

As soon as you're out in the Commonwealth, you'll be able to explore freely. Follow the main quest for a while, and, after completing the quest "Reunions" the Brotherhood of Steel will be available. That moment, or a little later (after "Shattered", for example), is a good time to join the available factions and advance on their questlines. I recommend advancing until your current mission is "The Glowing Sea", that way you'll have a higher level to face these missions.

The War Never Changes achievement in Fallout 4 worth 10 pointsEnter The Wasteland

The Unlikely Valentine achievement in Fallout 4 worth 26 pointsComplete "Unlikely Valentine"

The Reunions achievement in Fallout 4 worth 27 pointsComplete "Reunions"

The Dangerous Minds achievement in Fallout 4 worth 28 pointsComplete "Dangerous Minds"

JOIN THE FACTIONS

You'll probably have met the Minutemen already as you came out of the Vault. Their questline starts with "When Freedom Calls".

The When Freedom Calls achievement in Fallout 4 worth 11 pointsComplete "When Freedom Calls"

Once you complete the mission, make sure you complete "Sanctuary" too, as it isn't necessary for progression but it has an achievement.

The Sanctuary achievement in Fallout 4 worth 25 pointsComplete "Sanctuary"

"The First Step" is the mission in which you join the faction, and it unlocks a series of secondary missions related with helping settlements.

The The First Step achievement in Fallout 4 worth 12 pointsJoin the Minutemen

Do three of these secondary missions, and the next mission, "Taking Independence", will be available. Do it, and then the next one, "Old guns". Upon completing these, you'll have all Minutemen achievements, and you can forget of this faction for the rest of the game if you wish.

The Taking Independence achievement in Fallout 4 worth 14 pointsComplete "Taking Independence"

The Old Guns achievement in Fallout 4 worth 45 pointsComplete "Old Guns"

Time to join the Brotherhood. You'll find a military radio channel that will lead you into a police station, where you find some Brotherhood members. You'll have to complete a few missions until you become a member. "Reveille", "Fire Support", "Call To Arms", and, finally, "Semper Invicta".

The Semper Invicta achievement in Fallout 4 worth 13 pointsJoin the Brotherhood of Steel

You can do a few more quests for them, and I reccommend to do it. These are available after you complete the main mission "Reunions", and are "Shadow Of Steel", "Tour Of Duty" and "Show No Mercy".

Railroad time. You'll only be able to do a couple of missions for them at this point. These are "Road to Freedom" and "Tradecraft", in which you join the faction.

The Tradecraft achievement in Fallout 4 worth 15 pointsJoin the Railroad

Okay, time to continue the main missions.

CONTINUE MAIN MISSIONS

After "The Glowing Sea", you'll complete "Hunter / Hunted"

The Hunter/Hunted achievement in Fallout 4 worth 29 pointsComplete "Hunter/Hunted"

And here the decisions start. In the next mission, "The Molecular Level", you'll need to

Make sure you choose the Railroad, to ensure you can access everything later.

The The Molecular Level achievement in Fallout 4 worth 31 pointsComplete "The Molecular Level"

Next mission is "Institutionalized". And here, you are offered another choice. You need to

The Institutionalized achievement in Fallout 4 worth 15 pointsComplete "Institutionalized"

CONTINUE WITH FACTIONS

Time to deviate from the main quests and work in the factions again. As soon as you complete "Institutionalized", start "Underground Undercover" for the Railroad, and advance in the quest until your objective is

Then, switch to Brotherhood missions. Complete "From Within", "Outside The Wire" and "Liberty Reprimed". Now "Blind Betrayal" will be available, but DON'T COMPLETE IT. If you do, Railroad quests will turn unavailable. So, let's get back to the Institute.

REACH THE DIVISION POINT

Complete "Synth Retention". Then, in "The Battle Of Bunker Hill", you'll have two optional objetives. Choose to

and, at the end of the mission

Complete the next mission, "Mankind - Redefined".

The Mankind-Redefined achievement in Fallout 4 worth 18 pointsComplete "Mankind-Redefined"

This is the DIVISION POINT where the different paths to the ending start. I believe this is a good moment to get all miscellaneous achievements done (Bobbleheads, Miscellaneous Quests, Secondary Quests, Giant Enemies, Settlement Hapiness, etc) so you can then pick tne ending you want and conserve all of the benefits of these tasks.

And here's the important point. As soon as the next mission, "Mass Fusion" asks you to make a choice, MAKE A MANUAL SAVE. I'd create 3 or 4 saves in that moment, for precaution. Write the location and time of the save in a piece of paper so you can recognise it easily later on.

And now, you'll have 2 different paths to the ending.

PATH 1: RAILROAD + INSTITUTE

In "Mass Fusion", choose

This will turn you into a permanent enemy of the Brotherhood, making their quests dissapear. But you can still work for the Institute and Railroad.

Complete "Pinned" and "Powering up" for the Institute.

The Powering Up achievement in Fallout 4 worth 20 pointsComplete "Powering Up"

As soon as you finish "Powering up", you can finally complete "Underground undercover" for the Railroad. Do so.

The Underground Undercover achievement in Fallout 4 worth 25 pointsComplete "Underground Undercover"

Continue with the railroad questline. Dependind of the secondary missions you have done for them, you'll have to do a quest named "Operation Ticonderoga", or you may jump directly to the next mission, "Precipice of War". Anyways, complete those and the next one, "Rockets' Red Glare", for the last Railroad achievement.

The Rockets' Red Glare achievement in Fallout 4 worth 76 pointsComplete "Rockets' Red Glare"

Stop here, because the next Railroad mission ends the main questline. Time to go back to the Institute and complete their missions (You can make another save here and go back later for the Railroad ending, if you wish). "End Of The Line" will turn the Railroad hostile, and, because you already did "Rocket's Red Glare", you'll skip "Airship Down" and jump directly to the final Institute mission, "Nuclear Family".

The Nuclear Family achievement in Fallout 4 worth 66 pointsComplete "Nuclear Family"

And if this is your fist "final mission", you'll get the achievement for completing the main storyline.

The Prepared for the Future achievement in Fallout 4 worth 86 pointsDecide the Fate of the Commonwealth

PATH 2: BROTHERHOOD

In "Mass Fusion", choose

This will turn you into a permanent enemy of the Institute, making their quests dissapear. You'll be able to work for the Railroad at this point, but we won't do that.

As soon as you finish "Mass Fusion", "Spoils Of War" will be available. Complete it (make a save here if you want to do the Minutemen ending later), and go on the next quest, "Blind Betrayal". Now we can complete it without messing the other achievements.

The Blind Betrayal achievement in Fallout 4 worth 20 pointsComplete "Blind Betrayal"

Why do I say that? Because, as soon as you complete this quest, the next, "Tactical thinking" will start automatically... and it will block the Railroad quests, making them unobtainable. But at this point tat doesn't matter, because we will obtain them in the other path.

After "Tactical Thinking", complete "Ad Victoriam"

The Ad Victoriam achievement in Fallout 4 worth 67 pointsComplete "Ad Victoriam"

And, finally, "The Nuclear Option".

The The Nuclear Option achievement in Fallout 4 worth 57 pointsComplete "The Nuclear Option"

Railroad and Minutemen have their own "Nuclear Option" too, but only one of those is required for the achievement. So if you don't want to end the game with the Brotherhood, reload one of the two optional saves I mentioned, and complete the game with either of those factions to get the achievement.

Hope it helps!

07 Dec 2015 20:31

13 Comments

This is perfect. The other ones are so confusing! 15 thumbs up!

By Jedi Pirate Oni on 07 Dec 2015 22:38

Top guide! The only thing which confuses me that Blind Betrayal apparantly locks the Railroad, as I completed Blind Betrayal, went back to the Railroad and after handing over the tape it immediatly started Underground Undercover.

What am I missing? Build the device with the Minutemen, gave the tape 1st to the Brotherhood. Asked the tape back and then gave it to the Railroad.

By Parallax Demon on 10 Dec 2015 20:47

Maybe it was a glitch or something in my game, but as soon as I completed Blind Betrayal, the next Brotherhood quest, Tactical Thinking, started automatically. I went to the Railroad and I couldn't interact with anyone, they only made comments, no dialog options or anything. I assumed it was because of the nature of the Brotherhood mission, but maybe it was a glitch.

By amenazamenor JF on 10 Dec 2015 20:58

Have Tactical Thinking active. The only thing I can think of is how you resolved Blind Betrayal.

By Parallax Demon on 10 Dec 2015 22:15

I resolved it that way too. I don't know, I'll try to play it again if I have a nearby save to see what happens, and I'll update the guide.

By amenazamenor JF on 10 Dec 2015 23:16

Fantastic guide dude, have a smiley face

By ClawColyer on 19 Dec 2015 00:25

Perfect solution!
Thumbs up from me. 👍

By CadetChik on 07 Jan 2016 11:06

@ClayTheGreat, you don't have to warn father about any ambush. What I meant is that, when father asked you why the synths were freed, you should tell them you were ambushed.

Anyways, the way you did it, you still can follow the guide, but the next time you talk to the Railroad, you'll have some explaining to do. Make a save before talking to them in case you pick the wrong dialog option and make them hostile. You'll have to try to convince them that it wasn't your fault. After that, you'll be good to go.

By amenazamenor JF on 29 May 2016 20:20

Ok, thanks man! Appreciate the quick reply!

By ClaytThaGreat on 29 May 2016 23:46

perfect thank you!!!!

By SyrupSeason on 07 May 2017 04:24

Just remember to do all of the Nuka World line before finishing When Freedom Calls if you want to keep Preston as a companion.

By Rafe Harwood on 07 Nov 2017 02:58

It's not a big deal as Blind Betrayal can be done within 10 minutes. I got a bit uneasy when I read you can't do it before making your first hard save.

Really appreciate your spreadsheet and will continue the missions in the right order

By Parallax Demon on 10 Dec 2015 23:56

I have a question about "The Battle of Bunker Hill"... I warned the railroad, but I was confused by 'side with them' (a bit vague), and I dealt with the escaped synths by pressing A and resetting them to their factory settings (maybe that's what I did wrong?). When a I went to meet Father at the top of the ruins, there was no prompt to warn him about the ambush... Help, please! Don't want to screw up this playthrough...

By ClaytThaGreat on 29 May 2016 16:50

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Haskog

TrueAchievements

20 Nov 2021 15:26

enter the following into the console command - setstage 00173ED9 255

20 Nov 2021 15:26

1 Comment

Took a few seconds for it to load and the XP to post but great guide!

By IRL Games X on 16 Nov 2022 13:05

BiggD, THE, DEADLY, DOG

XboxAchievements

MISSABLE!

Quest Giver: Elder Maxson
Location: The Prydwen

This is the second to last main mission in the Brotherhood of Steel line. The first quarter of the mission are filled with following and placing items, but the majority of the missions deals with Liberty Prime and following it. Liberty Prime is an absolute juggernaut so there is no need to be out in front of it during the mission, simply follow behind and help kill enemies. Be care though, Prime drops lots of nukes so do not get too close to enemies he is engaging.

Harry94, Sellers, et, al

PlaystationTrophies

MISSABLE! - Completing the quest for the Institute called "Mass Fusion", will make the Brotherhood of Steel hostile and prevent you from completing their quests for good. Completing the quest for The Railroad called "Precipice of War" will also make the Brotherhood hostile! The game tells you this though before you do those actions.

Faction: Brotherhood of Steel
Quest Giver: Proctor Ingram
Location: The Prydwen

First of all, you need to activate Liberty Prime. You do this by plugging the Beryllium Agitator into him then just follow Liberty Prime through the streets of Boston. He will kill everything for you so you just need to follow him until you reach the C.I.T. Ruins, where he will blow a hole in the ground which will lead you to the Institute itself. Be careful of Liberty Prime though, because the Nukes he throws will kill you if too close to the explosion.

l4karat

stratege.ru

08 Nov 2022 08:44

This guide was translated automatically.

I encountered an unpleasant bug that prevented me from getting this trophy.
When you get to the subway, I strongly advise you NOT to take Deacon as your partner when he offers you.
Having encountered this problem, I had to roll back my saves by 5-7 hours, so better be on the safe side.

08 Nov 2022 08:44

Hazanberg, omegarevan, spazza136, NCSFan001

PSNProfiles

19 Jan 2022 00:00

We cannot show the content due to copyright protection. Please click the link below to view the guide.

https://psnprofiles.com/guide/3638-fallout-4-trophy-guide#22-ad-victoriam