It's a cop movie so there is shooting and there is blood, but none of it too squeamish.
Several people have "acid" injected into their faces and are then blown up by robots (non-graphic, but you see the needle enter skin)
A robot goes on a killing spree and murders several innocent people in a house, you don't see the bodies but some blood is shown on the floor.
A character is stabbed in the back of the head by a knife (non-graphic), but the body falls into water which turns red