I'm playing it on PC single player and multiplayer competitive matches. The single player absolutely has the best fps missions I've ever played. The only thing that sucks about single player is you are left wanting more levels or a mission pack to come out
Still getting the hang of multiplayer matches. It's very similar to counter-strike because scrims are played as search and destroy 4v4 or 5v5. Also, the airstrikes/helicopters/rpgs/grenade launchers are gone, and there's many perks that aren't available. The hardest thing about multiplayer is picking the models out of the very detailed enviornment imo.
The one thing I'm really hating about multiplayer matches atm is all the prenading that goes on. A couple well placed grenades near cars can own half your team in under 5 seconds of the round start.