This genre is really a bit of a misnomer - it's an "extraction camper", that's what all of them always boil down to from what I've seen. Sure, shooting happens, but the real skill is out-camping the other guy at the exfil. 
I can never be free, because the shackles I wear can't be touched or be seen.
i9-9900k, MSI MPG-Z390 Gaming Pro Carbon, 32GB DDR4 @ 3000, eVGA GTX 1080 DT, Samsung 970 EVO Plus nVME 1TB