Here are my steps almost finished:
The steps are 6 metres long and are at an angle of 55 degrees. They are entirely made from Pinus Radiata, treated to withstand being in the ground. I even made the handrail from that, and used a router to round it off. I'll paint the whole thing. Total weight is about 200 kg.
They are very easy to walk up, and OK to walk down forwards. And much safer than a ladder!
I decided against trying to have landings. The result would not be strong enough, and would be trickier to walk up and down than a simple run of steps.
The bank goes up another 12 metres with a gentler slope. I've already built a track up that part.