Looks great. Graphics are optimized much better than previous games.
The gameplay is absolutely horrible.
It's cool that you can open any door or shoot through walls for new access/sniping points but it makes the matches absolutely chaotic. You'll spawn into getting shot at pretty much every corner from someone you'll never be able to see.
While it's cool the maps are big and complex, with the above mentioned you're left with a maze of a map that's boring to play.