Great campaign. Multiplayer is completely broken, even worse than Halo.
The controls work well and the mechs are easy to control once you get used to them.
The campaign mode is criminally short, but it's great while it lasts.
And the multiplayer? A complete and total waste of time unless you've spent months learning how to press the "jump jets" button and the "fire Heavy Gauss Gun/EPPC" button. And that's if you downloaded the player-made patches and the multiplayer server patch. There's never any real fighting going on, just hiding behind walls, jumping, and sniping each other out with long-range weapons. Also, all the servers are set to "No Heat" and "Unlimited Ammo," so that players will always 1-or-2-shot your mech if you so much as venture a step too far out into the open. No challenge, no fighting, no fun at all.