Entertaining in short bursts.
Now, the multiplayer game on the other hand is a fast paced action struggle between two teams trying to capture each other's base camp. Kudos to the designers for making a computer opponent that is actually fun to play against, complete with excellent voice acting that keeps taunting you with pleasantly ironic remarks.
Coming to the PC as a no frills console-port there are some niggles with this one (keyboard mapping for changing vehicle form proved especially frustrating) but all in all it doesn't suffer like some console games seem to do. I was surprised at the fact that I keep going back to this game time and time again to give that pesky "Sky Marshal" a good kicking. Highly recommended shooter!