Start on a clean, light-colored face and make a few somewhat strenuous moves to get up to the dark roof. Clip the chain-extended bolt at the lip and then body-tension your way through the roof pull. Things get pretty thin, crimpy, and slopey after the roof pull. You won't get much of a rest until the last few moves below the chains. A brilliant route.
Left side of Powerhouse, straight through the roof and trending rightwards toward the anchor
King of the Ruins below the roof