Actually the reason I did not paste any tips is that because it is an easy game and I thought you guys can figure it out but really I do ask and I will try my best to answer them
Is it possible to finish it in 27 days? (54 actions, in eight areas, the other except for the starting need to reach lvl 3 factory and tower, also eight recon, that means 3x2x7+3+8=42+11=53)
The trick is to first kill all of the zombies first than go to the tower or factory that way. Step one:Kill all enemies to Threat:0 Step two:Start the upgrade Step three:For this you need the sheild ability that way your seeing view would increse