First up ,this bears practically no resemblance to the The Discworld in Pratchett's books. Some names are the same, some story elements have been picked out, and some characters have superficial resemblances to their book counterparts, but that's where any resemblance ends.
Putting that to one side, this is tonally all over the place. Some actors seem to think it's a serious drama, while others are hamming it up in every scene. It also has no definitive style, beyond "punk fantasy", with style elements swapping between scenes and even character design.
If you know nothing about the books, you might get some enjoyment from this, but to me it came across as a badly thought out mess.