Having seen Alazeh's comment I assumed I'd never get this level, however it only took 3 or 4 goes, which is a miracle for me. I settled on an exit early and knew I'd have to approach it in a particular way so took care on the route.
Eventually I got down to 2 off, it had taken a few weeks but I couldn't see how to get to 68 steps, then I got it. But for the life of me I thought this was the path I was getting 2off at. Bizarre. Good head scratching level.
Insights