Harry can be done in at some point - but let him get a few good sized boulders thrown down on the group first.
His aim is not all that great - so a few Orcs may get squashed as well.
-o-o-o-o-o-o-
Oh, and by the way - much appreciation to Professor Tolkien, from whom I 'stole' a great deal of descriptive prose concerning the Troll cave and the little clearing where they met their end.