Hello i am currently playing fallout new vegas and i want to join the brotherhood of steel and for one of the quests i have to kill Van graff and his men however awhile back before i got this quest i accidently killed one man outside the silver rush (place where i have to kill van graff in freeside) so i was wondering how am i supposed to do this because when i walk in silver rush i just get attacked by 30 men and die within 5seconds. So is there anyway i can reset my reputation with them or any other way to do this? Thanks!

There reputation is determend by the van graffes so unless your in pc no.All I can seggest is get relley good armor and crap lod of stimpacks and fight your way out or load a previous save and dont kill him

I am in a PC