There's actually a few different people who chase you, all scary in different ways...the sounds you hear whenever any of them catch you....well, you just have to hear it. Seriously fucked up, and I mean that in the best way possible.
It's very Clock Tower in that it's seriously flawed, unnecessarily frustrating, and very uniquely creepy. If you're someone who will put up with clunky gameplay for a scary thrill, definitely rent it, or buy for $20 or less.