I'd Slap You But Shit Splatters

Boulder up and balance onto a steep stance. Stretch to place your first piece(s) into the bottom of the left-slanting diagonal crack that curves into and above the corridor. Reaching the good part of that initial diagonal rail seems height/reach dependent. If you have to make an intermediate move or two up the steep face with no feet (without using the back wall), definitely harder and headier. Stemming off the back wall would make it much easier, of course.

Cams to 2.5", gear anchor.