P1: Steep snow. Trend right, aiming for the right trending gully.
P2: Continue moving right over steeper snow and enter the gully.
P3: (Crux) Move directly up the headwall over good ice. Watch the rock overhang on the right. (easier with more snow pack)
P4: Take the ridge via the mixed snow and ice.
The obvious right treading gully. The red X on the picture is bottom of pitch 2.
No fixed gear (UK style of course)
P3 can take screws
Bring a winter rack, deadman, and screws if you want to protect yourself for the whole climb.