You're the pilot of a helicopter with many missions to fly. You're going to have to avoid enemy fire, fly under the radar and shoot as many bad guys as possible. There are over 100 missions so it's a challenging game and the controls are great, it does feel like you're flying a helicopter. Of course the shooting action is controlled through lock-ons plus you can use artillery strikes to wipe out as many enemies as possible.
One nice option is that you can save the action at any point of the game so if you find yourself having to leave for a moment you can. Attack Chopper 2 is a fun and challenging game with nice graphics, lots of options and simple game play in the mould of older classic arcade flight simulations.