Shadow Ops: Red Mercury

Summary pulled directly from Steam - Some text may only be applicable to Steam platform

Race against time and terrorism as a member of the elite counter terrorist team in this all-out first person shooter. From the hostile streets of the middle-east, where danger can come from any direction, to the landmarks of a major European city. Your duty is to hunt down a terrorist overlord carrying a nuclear device before untold disaster is unleashed. Mix all-out assault with stealth infiltration in your mission to prevent disaster.

Features:

Exciting mix of all-out assault with stealth and infiltration
Play as a Delta Force operative trying to keep a nuclear accelerant out of terrorist hands
More than 20 authentic general military and special forces weapons
Fight alongside (and sometimes against) international special forces from the United States, the United Kingdom, Russia, France, and Germany