Here is a ladder for an extra tall bunk bed. I wanted something that is a cross between stairs and a ladder, something like what the Navy calls ladders in ships. I also want it to be able to swing up out of the way when not needed. For comfort with bare feet a lil carpet on the treads, too.
Cut up some 1" angle, drill some holes and chamfer the corners so they line up with the 1x2 tubing. Clamp and tack at 22.5°.