Hints and tips:
Spoiler
Start in upper right area and build defence.
Remember to build omni to get more energy.
Activate amp gem factory.
After you can defend, start lathing ship techs and amp gems in upper and lower part of map.
Get omni reactors update.
Move built omni(s) to unmired land areas.
Omni cannons, energy range increase and land production are good updates too, but get all updates if you want.
When you have recommended updates and all ships built, attack lower right area and get tech there.
Get energy mine too and lathe enemy buildings.
Lathe remaining buildings with help of all ships. Mire most or all land.