A man blows up a helicopter full of soldiers with a bazooka.
Ryback's back is gouged by an anchor by some bad guys as he swims underwater, and the wound on his back is briefly seen a few times, and it's somewhat gory.
Ryback punches an officer in the face in a kitchen, and gets into a brief fight with some soldiers. There's a cut on the officer's face for the rest of the movie.
There's a large shootout in the hallways of the submarine, and several bad guys are shot and killed.
Bombs blow up on the sub at different times in the film, and various bad guys are injured or killed by them, but the deaths and injuries aren't focused on.
A woman shoots a man in the back, and he falls over, dead.
Ryback kicks a man's legs out from under him and karate chops his neck, knocking him out.
Two men enter a meat locker and shoot up the inside, attempting to kill Ryback, and he opens a hatch in the ceiling, and the door swings down and hits one of the men in the head. Ryback drops from the hatch and kicks the other man in the face and runs out, locking them both inside.
A sailor tries to get at a terrorist but he is then knocked down and shot repeatedly by the terrorist while lying on the floor. This scene is bloody and brutal.
A man is shot in the head near the beginning, and a small blood spurt can be seen on his forehead.
A man is crushed by a large falling hook, and it's pretty bloody.
A man is forced on his knees with his hands on his head, and is subsequently shot in the back multiple times. Blood squirts from the exit wounds. His body is later turned over to reveal blood on his chest and mouth.
Ryback throws a knife thrown into an enemy's neck. The knife is later pulled out of his neck, offscreen with a brief gory sound. After the knife kill, Ryback fights another man, and breaks his neck.
A submarine and a helicopter are blown up at different times in the film.
Ryback fights a group of enemies with a knife, and several of them are sliced on the leg and stabbed in the armpit, both times with blood. Another is pushed onto a band saw and the blade cuts into his shoulder, also with some brief blood flow.
A bomb explodes causing a man to be hit with shrapnel in the face (offscreen, injuries only briefly seen afterwards).
Ryback punches another man in the face and throws him over some railing, and his leg gets caught in a rope and he hangs there, unconscious.
Ryback gets into a martial arts fight with a man on the submarine's deck, and rips out his windpipe. No blood is visible and the scene is dimly lit, but the windpipe can be made out in Rayback's hand briefly. The scene is brutal, but not graphic.
