Alright, today I tried to play FONV a little different. Just by killing anybody and anything.

Mr House died by Alien Blaster shot, Yes Man died by Mysterious Magnum, Caesar died from Mysterious Magnum aswell. I am declared terrorist by NCR for killing Ambassador Crocker.

BOS Mojave Chapter have been wiped out by me and Veronica, however I had to kill her afterwards since she became hostile.
Camp Golf, Camp Mcarran, Camp Forlorn Hope is wiped out.

Nelson, Cottonwood Cove is no more.

Novac's citizens are dead including Boone.
The same with Powder Gangers in Vault 19 and that prison.
The muties in Jacobstown and Uthobitha are dead, I dont like Lily so she died from a nuke blast
Every member of the Remnants died by the gun Maria

Hoover dam is painted red by blood, The Fort aswell. The Securitron Army is no more.

Every King member died by gauss rifle.

I am like vilified by everybody, except The Strip, here I am Idolized.

But now comes the little problem, how can i complete the game without Caesar, Yes Man, Mr House dead. And since I am declared a terrorist by NCR I cant do [censored] with them either.
Anyone that has a suggestion?

Yes Man takes control of another securitron, if he gets "killed".

I had no idea of that actually.
So in other words, it's possible to complete the game.
Awesome

Yeah I did that too, killed everything then panicked. Luckily they gave us an out, the only available route after doing that is to get Yes Man who cannot technically die.

Yes Man is actually Yes Man "The Ever Living" . He can not be killed permanantly and will always re appear in front of The Tops if I remeber the location right