Walkthrough: Buffy, the vampire slayer

Mansion

Main Hall

Once you see Angel needs help, a new enemy is introduced. This new beast will be called a screaming demon (as it is obviously made during the cut-scene). It's time to start using the stake again with this sucker. Go to the right and follow the hallway into the bedroom to find an elixir. You can also pick up a stake next to the fireplace in the barrel or to the left and slightly behind that barrel in another one. Head out the double glass doors to the left of the fireplace and prepare to fight those nasty screaming demons. After defeating both of them, head up the stairs. If you look behind you and above the tree, you'll see a holy water vial. I was unable to get it, but you sure as hell can try.

Once you enter the next area, a female vampire will appear. It's good to fight these beasts again. You can use sunlight to kill the vampires by kicking them or throwing them into it. Go to your left and left again to find a door to a steam room. A holy water vial is in here. Head to the far right part of the area to find a broom against the wall. Go through the door next to the rake, then straight ahead and through the door to the right. In the small room, a holy water awaits. Open the door on the far right and get the green key straight ahead. If you go into the room on the right, you'll be attacked by two screaming demons. Not necessary. Head left instead and then go through the door on the right. Go in the room and put the green key in the slot. Then head back into the first room after getting the rake and go through the newly opened door on the left. Now you'll have to go around through the room with the two screaming demons since you cannot go through the doors you just came through.

Outside a vampire will come from behind you. Lead him to the light. Then go around the corner to the rake area and get ready to fight a screaming demon. Go through the door and through the green door to confront two screaming demons. Right next to the unopened door there is a button to push. A health crystal will appear. Go through the door and find and elixir to the left. Go into the small door on the right and you'll find the red key. After that, a vampire will come into the room. She is part of the new breed of vampires: she's tougher than the ones before. Go into the next room, kill the vampire, and head through the only other door. Then go right and put the red key in the slot and watch the short cut-scene. Go directly behind you and go through the newly opened door.

Go right in the split hallway and through the door and down the stairs. Believe it or not, a vampire will greet you at the bottom of the stairs. Lead him to the right to avoid the other vampire throwing explosives. Grab the blue key and head for the blue slot. Right before you reach the room, a strong female vampire will await your arrival. Put the key in the slot and right through the double door. Then go straight through the next set of doors. A vampire awaits you. Go through the door on the left and down the stairs through the glass door. A vampire is inside. There is also a spear next to the fireplace, so don't be afraid to pick it up for use.

Head up the stairs and go through the door that wasn't opened before on the left side of the room (just keep going straight ahead until you reach a dead end). Press the blue button and a screaming demon will be standing next to you. You know what to do. Then blow down the phantom seal with the holy water gun and walk through that precious door.

Training Room

Boss: Scylla
She's back, but this time she looks uglier and reeks of snake feces. Her cobra form spits some venomous goo that is very annoying. Keep in close to use your kick attacks and combos. If you get knocked down, she loves to crawl across you, smacking you in the process. She will glow yellow/gold if she is about to slither attack you. She will also bite your head and shake you profusely. To kill her, move her to the middle or to the opposite ends of the buttons to blast sun or her vampire ass, killing her promptly.

Library

Get the reaper blade from Giles and see Willow for the crystals. Talk them all and further the plot of the story.