Pretty Awesome
Dual screen combat consists of you controlling the bottom screen while you or an ally controll the top screen. You can send units up to the top one by placing them on a factory or your HQ and pressing the send button. Then your units go up to the nearest city, base, or your HQ.
The new units are the stealth bomber, the piperunner, black bomb, black boat and the megatank. The stealth bomber is a bomber that can cloak itself in plain daylight. Piperunners are cannons that slide along pipes and act as an artillery. Black bombs are suicide airplanes that blow up next your enemies and cause 5 damage. The black boats are an interesting naval unit, they repair units and can carry up to 2 infantry. The magatank is you guessed it a insanly powerful tank that with the proper co power can destroy a neotank in one hit.
The CO powers on this one are either single co powers or a powerfull Dual Strike. The dual strike is one co power after another. The character your using uses his co power. After he is done wrecking havoc on your enemy he switchs characters and the other co uses his power and gets to move again. But dont forget that your enemies can use dual strikes to.
During batlle you can switch cos to use their special abilities. This is most useful with an awesome combination.
You get new cos, units, maps, map enchancers, and new battle controll. Dont forget the awesome advance wars music.