Number 1: In the main menu ,select Skirmish.
Number 2: Only change the game mode to close and difficulty to hard.
Number 3: Start battle and then spawn all the mining ships you possibly can,then spend your resources on upgrading Fighter hull and weapon power once.
Number 4: KEEP SPAMMING THE BUTTON 2 UNTIL THE BATTLE ENDS
Number 5: Repeat
Number 6: ??????
Number 7: *Profit

*Note this still takes a lot of time to get the achievement ,but trust me ,this is the fastest way to get the achievement ,hear music or watch a movie while you do this $@$#. ( unless you want to cheat by downloading a software that gets you all the achievements ,but if your flagged you can possibly get banned for that ,oh my ,are you still reading this? Stop plz )