I saw the poll of everyone ranking their favorites and I'm quite surprised this one was so high up. Easily my least favorite of the bunch. It's more annoying than scary, having to memorize the locations of the shards of the artifact and go diving because your air supply is so limited all the while being chased by an invincible mouth that I can't do anything about.
I guess it has a nice atmosphere but it was on par with Hold the Phone for sheer annoyingness