I did play it for a while, but it's not my thing...
The whole concept
did amaze me, though. It's executed quite well. And floating around in space in "quiet mode", sneaking up on people and ripping a hole in their suit with your bayonet, killing them... or even shooting them from behind, blowing up their tank (called a "tank shot", just to be original

), etc. etc. help keep the gameplay fun, and help keep you immersed in the game.
However,
I'm not playing it any more. Don't get me wrong, it is fun,
especially to start off with. And I can see how it could very easily become the next "hardcore" (to use such a term :S ), LAN and/or competitive game...
But...
I like me some customization, which this game lacks. A lot.
Please someone correct me if I'm wrong... but as far as I could tell, customization in this game goes only so far as choosing which type of grenade to use, or which team to go on.
(For those who might not know) Everyone uses the same gun (which makes sense, don't get me wrong. I don't expect there to be a myriad of choices for guns that shoot in
space. But when you zoom in it works like a sniper too, so... make of that what you will). Everyone moves the same speed, has the same firepower...
Which works with the whole "realism" concept...
But it seems to me that this is a game that some people will absolutely
love (like my older brother), or might find a little bland after the initial "OMGI'MINSPACE!" wears off.
Personally, if I had the choice, I wouldn't buy it again. But keep in mind, that's just my personal opinion, and this game
does have a lot of potential.
Look at some trailers of the gameplay online. Look at a
lot of them.
And if it still looks fun, why not get it?
Hope this helped :S ...