i was playing Vampire: The Masquerade - Bloodlines and some woman carrying a flaming torch came running towards me from some alleyway and started attacking me, i wanted to know who
She's a vampire hunter (called witch hunter in the game). You probably did a few Masquerade violations (i.e. you probably let a mortal see you doing vampire-like stuff, like feeding). On your character sheet page there are five "masks" on the upper right corner. A number of them will be slashed over. That's the amount of Masquerade violations your character has accumulated. The more violations you get, the more often will you encounter random witch hunters trying to off you. I hear that with four violations, it gets rather annoying as you encounter them at almost every corner. If you do five violations, you get a very short cutscene and the game will be over. To "undo" the violation, you need to get Masquerade redemptions. You can get redemptions if you help protect the Masquerade somehow. For example, in the early stages of the game you get a quest from LaCroix via email, where he asks you to retrieve a sample of werewolf blood from the local hospital and thus prevent mortals to examine it. When you get the blood, you get a Masquerade Redemption. Unfortunately, if you already have a full Masquerade "health bar" and get a Masquerade Redemption, it does not do anything. For a list of quests that give Masquerade Redemption, see here: http://faqs.ign.com/articles/711/711280p... It's a walkthrough, so there are spoilers, but if you read just the beginning of the quest entries you should be fine.