Single Player Walkthroughs
Part 5: Helga von Bulow
Map Name: boss1
The most important thing to beating Helga is to not get hit by her Tortured Soul attack. It does a lot of damage and you are blinded for a period of time; there is no way to know what is happening to you when you are blinded.
If you are ever running low on ammo or health, run back to the start of the level to pick up whatever you left earlier.
I recommend killing all of the Zombies that come out of the graves before worrying about Helga. Keeping the Zombies around means that there is more that you will have to dodge. Avoid the Zombies' attacks and Helga's attacks while you eliminate the zombies one at a time.
When it is just you and Helga, try to keep Helga in the middle of the courtyard. When she is running around, stay close enough that you can hit her but far enough away that she can't hit you. When she starts to do her Tortured Soul attack, run far away and dodge them. You can usually run near the graves and use the pillars to help avoid the Souls. Keep doing this until she is dead.
Be careful. After she is dead, there still might be Zombies that can kill you. I think a Zombie actually spawns after she dies.
Go to where the dagger is to end the level.
John S. submitted this alternative method for beating the level:
If after you get the zombies moving around the room, you drop back into the pit adjacent to the room entrance, you can easily pick off the zombies with the scope and the big man himself who lingers near the pit.I found that this stratagy works really well. I killed a few Zombies with the MP40 before running back to the pit at the begining of the level. From there I used the sniper rifle to kill the rest of the Zombies. Helga is too big to come through the opening in the wall towards the pit, so you can just jump out into the courtyard to shoot her and then run back to the pit (or even back into the catherdral) to avoid her attacks. It is easy to hit her with grenades since you know she is going to be close to the hole in the wall; just pull the grenade pin before going through the hole and throwing it at her.