A lot of one-on-one fighting, with many people killed by gunshot, stabbing, and bludgeoning. Blood from head wounds is shown only for a split second at a time, reducing the impact.
One massive free-for-all is shown in closeup for an extended period, with many deaths.
Many groups of enraged people are shown seriously fighting each other, usually from a distance, and without obvious blood in most cases.
A ship blows up.
A man is splattered with goo. Very cartoonish and unrealistic.
The action is very stylized and over the top, but not graphic in many cases. When injury or blood is shown, it is usually only visible for a short while.
The church scene is horrific and very graphic. Very violent.
Should say moderate, not severe. Blood is only shown from gunshot wounds for split second intervals, and it is never detailed or constant. The movie as a whole is quite light on blood.
A tooth is knocked out of a man's mouth during a brawl and the camera follows it through the air in slow-motion.
People are shown in danger of drowning. One person appears to have drowned.
An animal is implicitly killed; we hear a gunshot.