Hi, nice kind of game and already well polished for a demo. I seem to be stuck after putting the books where they belong, that green hair demon just arrives and there is no escape... what am I missing ?
You have to push the crate under the big crack in the wall where the light comes in from the corridor. Then jump and by pressing up you can crawl through the crack. If you are using the latest version there should be a little green arrow indicating this.