The crux is the overhanging stemming corner on the third pitch.
There are several fixed descents off this tower. If one is planning on linking this climb with Torre Winkler then the first rappel goes down through a tight crevice to the north to gain a large traverse ledge. Head east for about 50-100 feet then tunnel back around to the south east side of the tower to find the next anchor. From there several rappels lead either to the start of the more popular Torre Winkler routes or one can continue to the ground.
From the left edge of the tower scramble up 100 feet or so to a big ledge. Rope up and climb the first pitch which traverses onto the center of the tower.
A few larger cams up to 3" are helpful on the crux pitch.