Empyreal Destroyer
Dude! You just completed the Empyreal Destroyer achievement in Ether War and won the Empyreal Destroyer badge and 15 points!
thought it was hard too, then I just spammed allied forces upgrades and gradually collected ether by killing them off. get super-cannon and the game is done. finished at third try, easy!
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 "Kongai"){kind=icon}
 "Ether War"){kind=icon}
 "Bubble Tanks 2"){kind=icon}
 "Sonny"){kind=icon}