A fight breaks out and multiple shots depict stabbings and lots of blood is involved.
A man is being burnt every time he talks of a specific subject. He is shown in pain as his skin grows red and irritated. Another scene includes multiple men with their eyes and mouths sewn shut. This is quite disturbing. The main character has a sword dangled above her head and this causes her forehead to bleed.
There is moderate fight scenes in most, if not all, episodes. These tend to have limited blood/gore with a few exceptions in some season 2 episodes.
As the seasons progress, fight scenes get gorier and more blood is shown. There is a lot of throat-slashing and stabbing. Be more cautious when watching seasons 2 and 3.