TCD and Gimbal have pretty much said what I'll say. Cadaver is unforgiving, frustrating, awkward and fiddly, but despite all that I love it. It has a real atmosphere about it that keeps me coming back.
For more information on the story etc, go visit Kametyken's awesome Cadaver shrine
It's certainly not a game for everyone, but if it gets under your skin, it will bug you for years