There is a "crazy man" who is encountered in the crypt area accessed by an elevator system. While you can enter his dream without fear of immediately dying,
if you try to leave through the visible door, the "game over" screen tells you that was perhaps not the best approach to leaving. It didn't take long to figure out I had to leave by entering another person's dream and then just exiting that dream.
Ingenious, even if convoluted, approach to what was almost a quest in itself.