I finally fucking did it /v/. I finally got that bloody Benevolent Leader achievement... I was stuck on that since two weeks after the release.
Took me a total of 331 hours.
Do mods deactive steam achivements? I'm certain I finished the GRA missions
Don't mind me, just shitting on other achievements with real shit.
I'm not sure if they are deactivated just by installing mods but maybe a mod or two might change the trigger inadvertently. I think that cheats may disable achievements and maybe something is being picked up as a cheat though. I have been playing new vegas for years and still don't have most of the achievements even though I have completed the requirements multiple times. If anything, I assume FOOK-NV or NVSE fucks it up though.