Great concept. But where's the skirmish mode?
Online... what online? There's hardly anyone on. More people play the online demo. It's free! Big mistake.
The challenges can be fun, but you have to be an expert in order to complete most of them.
The A.I. is good. You can let the A.I. do bombings, and they usually succeed, so long as they don't get killed first. However, I've had the experience that the A.I. doesn't do too well in Torpedo Bombing. For ship to ship battle, the A.I. is usually spot on. I usually switch to the A.A. guns so as to let the A.I. use the main cannons while I steer.
Torpedoes bring up another complaint; They're too slow. You have to get into point blank range in order to use them effectively against faster ships, such as Cruisers and Destroyers. Battleships tend to travel slower, so you can get better luck off of them.
Skirmish mode is... absent. You can't set up a match between you and the A.I. All you have is Campaign, the expert only Challenges, and the almost vacant Online.
The only thing that keeps this game going is it's concept. It's RTS/TPS (Real Time Strategy/Third-Person Shooter) concept is pretty well done. Currently, Eidos is supposedly developing a new Battlestations Midway (name may be changed) so download the online demo, and if you like the concept, E-mail Eidos telling them to make the 2nd one.