I've been playing this game since closed beta, but stopped playing it a few months ago. Now that I saw it on Steam, I decided to give it a try.
The game improved a lot. Graphics are better, level design looks really good and they improved some of the new maps and added new ones.
Weapons variety isn't great, but at least they added new ones prior to the Steam release.
Only problem I have with this game is that the movements feel weird. It's like it has some kind of input lag, keys feel unresponsive. Not sure if it's because the game mechanics, or really an input lag, but as this never improved since closed beta, I believe it's intentional, though I think they should tweak it. I understand when you character runs, it takes some time to stop, as it does in real life, but how it works in game feels really weird.
I recommend the game as I had hours of fun playing it. My favorite part of the game used to be being a pilot and bombing the f* out of tanks. I'll try to play it again just to see what they did to flying.