It's a slog to play. Most of the time you just walk from one place to another. Combat is fine when there's a single enemy who don't require 40 hits to die, it becomes horrendous when you're forced to fight more than one.
It has a unique ambiance, some great moments, and the last hour is really worth getting to. It's the ultimate example of a game having bad gameplay but awesome narrative. If it had came out some years later it would have been an even shorter game and a walking sim and I think it would have been an unforgettable experience.
It has great elements, and I'm happy to have played it, but clearly I will never touch it ever again.