The film contains a lot of violence, but it is neither bloody nor especially gruesome. Most of the violence is in a spiritual warfare context.
An angel slices a demon's face off with a sword. We see the face slide off the head from a profile shot, but since the demon is turning to stone at the same time, no blood is seen.
About 1/3 of the way through the film two angels square off with a host of demons. There is some swordplay, but it doesn't look very realistic and there is no blood.
A man shoots himself through the mouth. We see him put the end of the gun in his mouth, we hear the shot, and see blood splatter a boy's face.
A woman cuts her hand for a Satanic ritual. We don't see the initial cut, but we see her wipe the blood on a carpet.
A man stabs another man through back, and we see the end of the knife protruding from the man's front.
An angel and a demon fist fight. The angel breaks the demon's arm on screen. We hear a loud crack. The angel then spins the demon onto a blade sticking out of a wall. After that he pulls another sword out and stabs it through the demon's head. Instead of blood, black smoke comes out of the demons wounds.
At the end, an angel slices Divination in half. He see her front half laying on the lawn, while her legs are kicking in the background. The angel then stabs an exploding dagger into her stomach which blows her up.