I quoted the ninja throughtout.
Quoted his exclamation of "what the fuck?" that is. The plot, as it were, was somewhat difficult to follow as it played out, but became clearer as character discussed it later. Though having your story unfold in this way can be a powerful narrative tool, I doubt you intended it, nor do I think it would be appropriate for your story. Rather, since the action is primarily a story being recounted, you can easily justify a certain amount of narration from the ninja. Certain things like why the ninja was apparently teleported to the afterlife and what the slug was could have been explained in as little as a single sentence; the fact that the ghost was a ghost could have been established at the beginning of the fight rather than halfway through in his dialogue box.
Other than than, the music doesn't sync with the video after it loops and the slime and blood effects that splatter on the screen sometimes obscure the action. Best of luck in the future!