imho this game holds up very well, especially compared to today's fps standards. Beautiful old school level design, amazing gun play, relentless A.I. that seems almost too human like, all mixed together with an awesome story makes this game not only one of the greatest for its time, but ever.
Great story focused RPG back then, still holds up well nowadays if you want a change of pace. Combat is something you have to get used to at first, once you get it its fine, default controls in general are somewhat cumbersome, but nothing you can't get used to. If you're interested in an early 2000s Witcher game, check both Gothic 1 and 2 out, highly recommended!