At least if your a PC gamer. I picked it up a few days ago, and two hours here, two hours there, and two hours here, and it's done. That was literal. Six hours.
This game in criminally short. Especially for the ungodly sum of $50 they charge you to buy it. It felt more like an expansion than anything else.

Yes, it was a fun game, if you like the constant non-stop shoot-em up types. The cover system is awesome, though. The camera work in the game is superb, the graphics are great, and yet didn't tax my system at all. The sound was awesome and the combat was very different with the cover system. You will die if you don't use it.

However, the game just throws you right into the action. I had no fucking idea what was going on. I'm done the game and I still don't. There's no story unless you wait at the start-up screen for the intro movie to play, and even then all you get is that humans were mining some liquid on some planet, and all the sudden these creatures popped up and started waging a war. They don't explain who they are, why they did it, what the liquid is, why it's valuable or why the fuck you're in jail.
And for a game that take place in the future, you would think they would have had some sort of advancement in weapons and aviation. Rifles and shotguns still use regular ammo, and helicopters are still, well, helicopters.

In short, if you're used to non-stop action and love shooting something every five seconds, this is the game for you. If you aren't an XBOX owner, wait until this game comes out with it's sequel (there will be one) and buy/download both at once.

Oh, and for some reason every soldier in it is inexplicably jacked - they all have 85" biceps. I guess 'roids are standard issue in the future.