Ok, I like a lot this game, it´s different from others. The first time I won without using the stairs XD.
When finally I went upstairs in other play, at first I was like pressing repeatedly the up key, then repeatedly right... up... left... It took me a pair of floors to understand that if I keep pressed the up button and then alternate the left and right buttons pressed until the animation of the leg over the stair finish is enough XDDD.
It would be nice continue the story in all the rest places or floors with monologues, thoughs and/or decisions... I think it would enrich the experience.