No, the Demo doesn't end there. I guess that's kind of a trap you need to avoid first, or even better : disarm through certain levers.

The Demo ends with jumping into a certain pit. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />

When you find a big kettle of crazy, it's best not to stir it.
--Dilbert cartoon

"Interplay.some zombiefied unlife thing going on there" - skavenhorde at RPGWatch