The game was barely compatible with Vista. While I did understand what happened with this game, something seemed like it was missing, preventing my from properly enjoying the ~3 hours of gameplay.
For the technical aspect, there really should be a patch. There's a few issues with the camera making some actions difficult.
The story, while present and plausable, seemed to be weak. There was a background where Dehon killed the most of the other characters, but the only way to find out was just discovering their corpses as you approached them.