In theory, I like hardcore online survival-shooters. But they're not for me. Regardless, Escape from Tarkov looks pretty rad. You're in the Russian city of Tarkov, which you need to escape, apparently.
This video focuses on inventory and looting, but it's more tense than a straight-up firefight, in my opinion. Digging through duffel bags. Manually placing and replacing items in your gridlocked inventory screen. Fixing gun mods onto your firearm in real time. Checking your six every step of the way down every hallway you clear. Man. Pretty intense.
Escape from Tarkov's closed beta starts in early 2016 on PC. You can sign up here.