See, I was purposely trying to get through 'Holm only using ball. I can practically dance through the zombie hordes unscathed and kill everything there with the ball, but there's a point where throwing it ten dozen times just to get one of the throwers dead starts to feel a bit boring. That's why I avoided them. My aim was to have fun.
Good luck getting the ball to Ravenholm, the ladders are a bitch to navigate with it. Yeah, and avoid fire. The ball soon explodes if it comes to contact with it. Otherwise it's nigh indestructible and can kill anything with enough forward momentum, thanks to Havok physics. The ball also largely ignores you if there's other beings present, so you can leave it on it's own for a while and it will hunt the enemies. It's like having a partner. The thing also comes back to you after everything else is dead, because it wants to muder you. Of course, without the electric spikes other balls have it can't do much to you.
I love the lil' bugger.