Styx is an old school stealth title, in the veins of the classic Thief and Splinter Cell games. The objective is to stay out of notice in the shadows, and if you're detected you essentially should restart from a save. This title improves on everything the first game did, notably how its much easier to "quick save" your progress. This feature is a must have in stealth games. (I bought this for both XBOX One and PS4, and am essentially reusing the review I wrote for the XBOX version.)