Veknoid's Top 50 FPS Project

[Carl]

Stalker was pretty good. As was Thief 2.

I'd recommend both, if you're wanting to try out a couple more.

Maybe try out Mirror's Edge too. Did you ever play Day Z when it was popular? Might be worth an honorable mention as it was essentially a mod for ARMA 2. Hell, ARMA 2 and ARMA 3 might be worth a shot too.