Well, I´ve only played Witchaven 2 actually, from what I hear they´re mostly the same, and it was an excercise in tediousness. But then again, I guess most of what´s bad with the game is due to technical limitations.
I would never consider it to be as good as Duke3D or Blood, the game was very weird on some stuff (monsters) and if I recall well, fighting wasn't perfect aswell.
I can't remember any other details, all I can remeber is the overall feeling it gave me. I had plenty of fun playing it.
Maybe also because there weren't many first person sword games, it felt like candy...
I played a little of the Amulets and Armor demo a long time ago. I remember it being kind of fun... I´ve never gotten it to work with newer computers though.