Pull a small roof while battling a small arete that forces you off balance. There appear to be these little geode crystal type thingies in a layer of the arret. After that, traverse a crack and continue up the fall-line.
This line climbs just right of Batman Surprise and avoids the crevasse and the bat cave.
This line shares the anchors with Batman Surprise. In addition to those anchors, there is a single bolt just over the edge with a rap ring on it. Making use of this too adds some redundancy to whatever you have as an anchor that flops over the edge. The edge isn't sharp.