I walked towards the dark clouds for my first playthrough. For my second I turned right from the starting point and kept walking to find the orb. I just did another play through where I walked towards the light clouds, I kept walking backwards till the towers disappeared then I went back to them and got the same ending except that I got to the penultimate line of dialogue then started to walk away towards the black orb. I didn't make it in time, I guess, because --SPOILER-- the character attempted to decapitate themselves on the now distant sword again. --SPOILER END-- This had the effect of letting the camera clip through the ground and I could see where the ground was no longer being generated. It's just the one test but I got the same ending. Still fun though!