Below

Ooooooooo....scary. Do ghosts not kill for the simple pleasure of killing anymore? Why is there always some cliché back plot that just dilutes the tension? The best thing about the film was the portrayal of madness spreading through the crew. I found that the whole explosion thing seemed just like a shortcut way to kill so many characters instead of actually making it a little more interesting such as a desperate escape from the sub that goes wrong, something a little more visually grasping. Worst thing...... The way over the top smg scene of the guy running slow mo over the sub marine, a little too much as the main build up of the suicide is over and that just tries too hard to drag out the action. As a game designer I would like to see how I could create the sense of psychological disorder within a game to help build up tension.
I give below 7/10.