Well, I've played this little game by the creators of Giants, and frankly ... it's rather bland, that ain't worth the 4gb+ install it needs.
There's no ... taste ... in it.
The action is okay, there's loads of it, shooting All The Time in fact, kinda more like arcade shooter than FPS in fact. You've got two companions following you around to shoot, and they're kinda okay, but otherwise everyone else is Stupid. AI? Hah, don't think so. At the most, they'll run to a machine-gun nest and try to shoot you with it, but get away from it's range and they'll stand there looking stupid while you shoot in their back.
The weapons ... here's where it's Damn cool

There're loads of different, very cool weapons, but you'll find yourself mostly using the Machine-gun, because well, the other weapons are Cool, but you've mostly got Damn little ammo it's nearly worthless anyway, unless you want to try em out for the heck of it. The machine-gun, though, you've got 100+1000 ammo for it, and it's good for killing every grunt except barracks or static defences or ships.
So, well ... the only good thing I found besides that was the sometimes funny dialouges (in cutscenes as well), otherwise graphic-vise it's Not strong. Kinda like Outcast ... which is a few years older, so it ain't impressive at all.
To sum it up, the only thing you want to play this game for is the fun (not hilarious) dialouges you hear in cutscenes and in-game, and perhaps for some arcade-style shooting. Other than that, there's no reason at all to waste a whole 4gb on a game like this, when you could install Call of Duty to get Loads more fun with Loads less space taken.
Think I'll uninstall this shite, and install CoD again.