Not without flaws, Vietcong is one of the most immersive war shooters out there and remains unique and refreshing among others of its kind.
Space Hulk: Deathwing Enhanced Edition doesn’t offer much of a different experience than the original but the new content is certainly welcome and if you liked the original, you’ll probably like this.
Rainbow Six 3 and Black Arrow are good games but pale in comparison to Raven Shield.
Rainbow Six: Vegas is good on it’s own merits but does not represent what the series is known for. It’s a cover based shooter with lite tactical mechanics. No real thinking required.
SWAT 3 is right up there with the best tactical shooters, even to this day. It has some of the greatest AI in video games and can be a truly immersive experience.