I made it to the end! I think the thing I really wanted was some kind of map, I found myself wandering around so many empty hallways. Also, I would force the player to pick up the pipe in some way. You can miss the pipe, which not only makes the game harder but also breaks the continuity, as the dialogue references you holding a pipe that you actually don't have.
Aside from that, I enjoyed the experience! I like the way health is portrayed, I enjoyed the setting and world-building, and the pipe swinging (from both the zombies and yourself) was very crunchy and felt great. Good work on your entry!