How to beat spore aliens : Spam quad micromissiles and 1-2 lasers as defence Build your economy and build capitals or build mjolnir/artillery
How to beat the shield bubble aliens : Quad micromissiles and mjolnir/artillery yet again
5 trenches, short map, camped their spawn with 2 trenches of 3 machine guns each on hard mode
no fire support
It took 6 hours to drive down their morale enough for them to surrender
For Level 11, grab all the (2) bases and then attack the (5) base red attacks. From then on, just keep holding on to what you have and attack the enemies weak bases.
I think level 12 is even more impossible....
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