I'm not to sure whom do you mean with Shadow Beast. Can you tell me where you meet it?
And which battle with Durza do you mean? The one in the castle? Keep checking your map to see where he warps to, follow him but take care not to be hit by the arrows. Keep slashing at him, don't use magic.
i have a fluffy blanket i could wrap myself in -Hasire ~ and then you make bah like a sheep? - Mirage yes - Hasire