Agility is what does it my friend. If you fail, you will fall, and take ~20 hp loss. But, in the South (West?) Corner, there is a guy that gives you stew, meat pie and bread, so food isn't an issue. Good luck!
I'm slaying to 99, and have a bunyip, so... When is it better (if ever) to use guthans over a bunyip? I know not to on the ones that require slayer headgear, but any other ones?