The West Face is a major alpine-style objective on Lhotse and is documented as a very difficult, serious line. It involves steep mixed climbing at extreme altitude, with objective hazards from icefall, avalanches, and severe weather.
Route Outline
Khumbu approach -> Lhotse West Face base
Establish camps on the lower face and climb mixed snow/ice terrain
Continue up the steep upper face toward the summit ridge
Reach the summit of Lhotse
Descend by the ascent route