As the Sole Survivor journey ends in Fallout 4, they may find themselves staring out at a Commonwealth vastly improved by their presence. The main endings for the game will differ slightly depending on which faction was sided with, with a peaceful life ahead for most. However, there is a clever way to get a truly evil and chaotic ending, and hilariously, it never involves siding with the Institute, the main ‘bad guys’ of the game.

https://screenrant.com/fallout-4-evil-ending-institute-factions-chaos-op-ed/