I think I quit watching soon after Duncan killed Ritchie. It was during that period when he refused to kill anyone with his sword yet somehow still had to get in life or death fights every week.

To be honest, the show was objectively very bad all the way through. How many times did someone pull a hidden broadsword out of their skin tight jeans? It was just utterly ridiculous. But it was also pretty entertaining for the first two or three seasons.