All four factions will have been met by that time they are the brotherhood the minutemen the railroad and the institute.
Fallout 4 siding with the institute ending.
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You re the leader and you can save the planet.
Sounds like piper is close.
You will need to complete a.
Companion reactions upon siding with the institute and witnessing the destruction of the brotherhood and their prydwen airship.
If you decide to pledge final loyalty with the institute faction in fallout 4 then you will no longer be able to complete quests or contact allies of other factions.
The minutemen of course are spared from the institute.
It is possible to stay on positive terms with the railroad and brotherhood of steel by not making any of those two factions hostile.
The main story concludes once you reach the institute.
Why the institute ending is good for the commonwealth pumatheories duration.
Deacon and danse are missing for story reasons.
But with the institute ending you become director and even if it isnt explicitely stated in the game you can imagine manufacturing things like the g e c k and sending synths to clean up the planet.
In this ending the minutemen become the dominant force in the commonwealth and the player character restored the minutemen to their full power.
Siding with the institute will pit you against both the railroad and the brotherhood of steel factions.
After that point you re given the choice of either helping one of the main four factions.
For fallout 4 on the playstation 4 a gamefaqs message board topic titled siding with the institute and lowkey claiming the moral high ground.
Fallout 4 destroying the brotherhood siding with the institute aftermath mercenary mulluns.
All companions comment on the institute ending.