The surgery scenes, needless to say, are very graphic and realistic, there's lots of blood and surgical gore all throughout them.
The first part of the first episode has a graphic C-section, with loads of blood and a graphic moment of a man reaching into the wound and retrieving the baby (the woman is sedated through all this).
One of the main characters picks fist fights at pubs with bloody results.
One man has his tooth pulled out by mobsters as punishment for not making payment of a debt.
A man storms a room and cuts the throats of two men, then repeatedly stabs another. The scene ends with him hurling an axe at a man which lodges in his forehead.