Black enemy is too strong, obvious author tips on some sort buy2win upgrades but that model can work on iOS but on Android or Flash its receipt for fail. One star.
Tactic for last level!
Move all triple rockets on right side of the ship all other staff on left side, when fight start move your left part of the ship off screen and you can easily beat that level. Sure, put some damage boosters and energy boosters also put few item collectors on right side (I use 3 double collectors) of ship.
 "Solarmax 2"){kind=icon}
 "Galaxy Siege"){kind=icon}
 "Takeover"){kind=icon}
 "Pandemic 2"){kind=icon}