In Tomb Raider.The angel of darkness how do you defeat Boah.?

Question

I have tried all the usuall things but just cannot get past this level.

Answer 1

I take it you mean the last but one level where you are playing as Kurtis (and it's Boaz, by the way). She has four capsules on her body, two at the front, two at the back, left and right. Get into a corner, as she cannot damage you so much there. Get out your pistol and shoot her underside. The green ooze will come out and she will start swaying from side to side and screaming. This is when you must shoot. When ooze is not coming out, you cannot damage her.
When you have hit her and destroyed a capsule, she will look as though she is doubling up in agony. Do a side flip and run to get your pistol clip which is half way down on the left hand side of the ring. Run REALLY fast because she recovers quickly. The ones at the back are the most difficult to get, but since you have an unlimited pistol clip, you can try many times.
When you have shot all four capsules (oh by the way, they spew out green stuff continuously until they are destroyed, and this slows you down if it catches you), a cut scene will show her regenerating as a kind of dragonfly. Just shoot her and she will soon die. You must then go up to the body and another cut scene will show the end of the level.
P.S. I advise you save after each capsule is destroyed, since there is nothing more frustrating than getting three and then getting bogged down in that ooze, dying and having to go back to the start. Good luck!