Sit start on a large jug on the lower left side of the boulder as for Tufa-Flinchin'. Climb up and right to a series of good holds to a large move to the arete, escape early or for full value follow the arete to the top.
Follow directions in the Midway boulders page. Continue past The Roadside boulder approximately 1/10 mile. Hike up towards the cliff past a small meadow with large pine trees and look for a somewhat decent trail that will take you back south towards the boulders. Katsina is in the jumble of boulders. Other hiking options exist, but this way is best for minimal log hopping.