Are you guys all serious? This game is a cinch to beat... 1st run through on blind mode, all medals. (and I have screens saved) I reckon the second last level is much harder than the last, its the only one I can't consistently beat. For most levels simply attack the enemy straight away. For levels with guns grab em ASAP then grab shipyards leave a few ships on main planet so is colonized when shipyard comes online. To win against mothership you have to be attacking it ASAP else you get overwhelmed.
I'm actually tempted to code a v2.0 of this
 "Solar Defense"){kind=icon}
 "Solarmax"){kind=icon}