Game is still filled with bugs and need still _a lot_ of optimization.
Otherwise game is very enjoyable; gun-play is solid and zone itself is very atmospheric.

For s.t.a.l.k.e.r. veterans i recommend hardest difficulty right away.
"Medium" equals super-easy in this game.

Insurgency Sandstorm is a great blend of milsims and arcade fps games.
If you feel like arma/squad are boring and battlefield/cod are too hectic. You should try this one out.

Highly addictive co-op experience overall.
PVP still got some small balancing issues but otherwise it's enjoyable as well.
I believe that I'll be spending hundreds of hours with this game