I played a little Battlefield One for the yucks because it's just so weird. TF2 has solid gameplay and fast action for that quick pick-me up, but it is a bit cartooney.
But I really haven't played other FPS regularly since 2006 when Red Orchestra came out. I played the shit out of that. RO2 came out in 2011 and I haven't spent as much time since my FPS bug kinda waned over time, but you can't go wrong with it.
Here's your typical gameplay video
https://www.youtube.com/watch?v=dMYoCWHIgwY
Here's some vehicle gameplay
https://www.youtube.com/watch?v=Lyrl49hCmqY I'm sure you can find more.
Technically the multiplayer component is not dead
[You must be logged in to view images. Log in or Register.] There's usually a 64 player EU server going, what more do you need? I think it's like five bucks and 10gig download.