People who say it is too hard must not pay much attention during the tutorial, I was able to beat it first try. Just get to level one, research the weapon, then switch both of your factories to the second usit type. Then just hit and run all his mines and energy stations until you have a firm advantage. Then crush him.
An excellent game. Although it is of the same family as Steambirds, it is very different. There are several planes you can choose from, the bonus weapons are different, and it's multiplayer.