Pins at almost every crucial spot. Can be done in one pitch. Depending if your second is a newbie or not. When I first followed it, I wanted the rope to be taut but it was impossible to go under the roof while the leader was pulling, and the leader didn't want the follower to swing outwards if fallen (then the follower will have to be lowered and climb from the ground). In this case, this climb is better done in two pitches, anchored at pin on top of roof.