Might give CULTIC a try, then. It’s essentially a Build engine game along the lines of Blood with large maps that typically allow for some degree of nonlinearity and exploration. You end up with quiet periods of sneaking around and exploring to break up the combat segments.

Otherwise I’d say you can’t hardly beat the new Wolfenstein games. Varied gameplay, an actually decent plot, and when has shooting Nazis not been as American as apple pie? The first one hasn’t aged as well as the second on PC though. I get occasional frame drops and other oddities, but I suppose that could be an Intel drivers thing. Those idTech engines haven’t aged super great.