Nothing explicit, but a strong suggestion of child sexual abuse.

Stab wounds are seen, including a sharp item removed from a character's hand and a character stabbed through the neck, and reference to another stabbing in a school (not seen). A child has bruises considered non-accidental by an attending medic. Minor physical confrontations with pushing. Stronger fights including characters bludgeoned into unconsciousness or worse, using various weapons. A character is cut with a scalpel, and a patch of skin and flesh torn away from his conscious body.

A child is shot offscreen, but blood seeps under a door. An abused and seriously injured child (implied broken limbs) is found trapped in an enclosed space. It is heavily implied an adult intends to kill them.

Fags, piss, shitty and fuck, or variants, but infrequent. I believe fags is the only one repeated, although I wasn't counting.

Some drinking - most explicitly when a character picks up a bottle of clear spirit in a shop and takes a mouthful before going to pay. This character later offers wine to another character, but it is not a significant feature.

A character jokes about working better after 'a couple of lines', and is later asked if he is high. Characters are injected with medical-grade drugs, once for good reasons, once maliciously. Not a major theme.